1
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Yang Y, Li G, Zhao L, Tan P, Li Y, Li S, Tan L, Deng C, Wang S, Zhao Z, Yuan C, Ding H, Chen L, Zhu J, Guan Y, Hou CH, Tang P, Li Q, Liu H, Yang Y, Abate A, Shyue JJ, Wu J, Russell TP, Hu Q. A Catalyst-Like System Enables Efficient Perovskite Solar Cells. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2311145. [PMID: 38334458 DOI: 10.1002/adma.202311145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 12/25/2023] [Indexed: 02/10/2024]
Abstract
High-quality perovskite films are essential for achieving high performance of optoelectronic devices; However, solution-processed perovskite films are known to suffer from compositional and structural inhomogeneity due to lack of systematic control over the kinetics during the formation. Here, the microscopic homogeneity of perovskite films is successfully enhanced by modulating the conversion reaction kinetics using a catalyst-like system generated by a foaming agent. The chemical and structural evolution during this catalytic conversion is revealed by a multimodal synchrotron toolkit with spatial resolutions spanning many length scales. Combining these insights with computational investigations, a cyclic conversion pathway model is developed that yields exceptional perovskite homogeneity due to enhanced conversion, having a power conversion efficiency of 24.51% for photovoltaic devices. This work establishes a systematic link between processing of precursor and homogeneity of the perovskite films.
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Affiliation(s)
- Yuqian Yang
- School of Microelectronics, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Guodong Li
- Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Fujian Provincial Key Laboratory of Photoelectric Functional Materials, Institute of Materials Physical Chemistry, Huaqiao University, Xiamen, 361021, China
- Institute of Carbon Neutrality and New Energy, School of Electronics and Information, Hangzhou Dianzi University, Hangzhou, 310018, China
| | - Lichen Zhao
- State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Frontiers Science Center for Nano-optoelectronics & Collaborative Innovation Center of Quantum Matter, Peking University, Beijing, 100871, China
| | - Pengju Tan
- School of Microelectronics, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Yu Li
- National Synchrotron Radiation Laboratory (NSRL), University of Science and Technology of China, Hefei, Anhui, 230029, China
| | - Shunde Li
- State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Frontiers Science Center for Nano-optoelectronics & Collaborative Innovation Center of Quantum Matter, Peking University, Beijing, 100871, China
| | - Lina Tan
- Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Fujian Provincial Key Laboratory of Photoelectric Functional Materials, Institute of Materials Physical Chemistry, Huaqiao University, Xiamen, 361021, China
| | - Chunyan Deng
- Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Fujian Provincial Key Laboratory of Photoelectric Functional Materials, Institute of Materials Physical Chemistry, Huaqiao University, Xiamen, 361021, China
| | - Shibo Wang
- Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Fujian Provincial Key Laboratory of Photoelectric Functional Materials, Institute of Materials Physical Chemistry, Huaqiao University, Xiamen, 361021, China
| | - Zhenzhu Zhao
- School of Microelectronics, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Chengjian Yuan
- School of Microelectronics, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Honghe Ding
- National Synchrotron Radiation Laboratory (NSRL), University of Science and Technology of China, Hefei, Anhui, 230029, China
| | - Liang Chen
- National Synchrotron Radiation Laboratory (NSRL), University of Science and Technology of China, Hefei, Anhui, 230029, China
| | - Junfa Zhu
- National Synchrotron Radiation Laboratory (NSRL), University of Science and Technology of China, Hefei, Anhui, 230029, China
| | - Yong Guan
- National Synchrotron Radiation Laboratory (NSRL), University of Science and Technology of China, Hefei, Anhui, 230029, China
| | - Cheng-Hung Hou
- Research Center for Applied Sciences, Academia Sinica, Taipei, 11529, Taiwan
| | - Pengyi Tang
- State Key Laboratory of Information Functional Materials, 2020 X-Lab, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, China
| | - Quiyang Li
- State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Frontiers Science Center for Nano-optoelectronics & Collaborative Innovation Center of Quantum Matter, Peking University, Beijing, 100871, China
| | - Hong Liu
- State Key Laboratory of Information Functional Materials, 2020 X-Lab, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, China
| | - Yingguo Yang
- Shanghai Synchrotron Radiation Facility (SSRF), Zhangjiang Lab, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201204, China
| | - Antonio Abate
- Department Novel Materials and Interfaces for Photovoltaic Solar Cells Helmholtz-Zentrum Berlin für Materialien und Energie Kekuléstraße 5, 12489, Berlin, Germany
| | - Jing-Jong Shyue
- Research Center for Applied Sciences, Academia Sinica, Taipei, 11529, Taiwan
| | - Jihuai Wu
- Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Fujian Provincial Key Laboratory of Photoelectric Functional Materials, Institute of Materials Physical Chemistry, Huaqiao University, Xiamen, 361021, China
| | - Thomas P Russell
- Polymer Science and Engineering Department, Conte Center for Polymer Research, University of Massachusetts, 120 Governors Drive, Amherst, MA, 01003, USA
| | - Qin Hu
- School of Microelectronics, University of Science and Technology of China, Hefei, Anhui, 230026, China
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2
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Zhang D, Wang X, Fan Z, Zhao Y, Xia X, Li F. In Situ-Grown 2D Perovskite Based on π-Conjugated Aggregation-Induced Emission Organic Spacer Boosting the Efficiency and Stability of 2D-3D Heterostructured Perovskite Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 38436971 DOI: 10.1021/acsami.3c15594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/05/2024]
Abstract
The two-dimensional-three-dimensional (2D-3D) heterostructured perovskite solar cells (PSCs) have drawn widespread interest, wherein the organic spacer plays a significant role in the photovoltaic performance. Herein, a novel π-conjugated organic spacer with the aggregation-induced emission (AIE) property, (Z)-2-([1,1'-biphenyl]-4-yl)-3-(5-(4-(3-aminopropoxy)phenyl)thiophen-2-yl)acrylonitrile (BPCSA-S), is designed and synthesized, which is successfully applied for the in situ construction of 2D-3D heterostructured PSCs via the two-step solution method. By virtue of the functional groups (i.e., cyano, thiophene, and amino) in BPCSA-S, the BPCSA-S organic spacer can trigger the in situ growth of 2D perovskites, which will serve as the template for the heteroepitaxial growth of 3D perovskites, thus obtaining a 2D-3D heterostructured film with high-quality and few defects. More pleasingly, benefiting from the AIE property and delocalized π-electrons in the π-conjugated BPCSA-S organic spacer, excellent photosensitization process and carrier transport can be achieved. Consequently, the resultant 2D-3D heterostructured PSCs yield a pleasing PCE of 22.07%, accompanied by mitigatory hysteresis, as well as enhanced stability. Our research shows a hopeful multifunctional organic spacer approach using the novel π-conjugated AIE organic spacer for high-performance PSCs.
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Affiliation(s)
- Dan Zhang
- School of Physics and Materials Science, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China
| | - Xiaofeng Wang
- School of Physics and Materials Science, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China
| | - Zhiping Fan
- School of Physics and Materials Science, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China
| | - Yixing Zhao
- School of Physics and Materials Science, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China
| | - Xuefeng Xia
- School of Electrical Engineering, Nanchang Institute of Technology, 289 Tianxiang Avenue, Nanchang 330099, China
| | - Fan Li
- School of Physics and Materials Science, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China
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3
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Lyu H, Su H, Lin Z. Two-Stage Dynamic Transformation from δ- to α-CsPbI 3. J Phys Chem Lett 2024; 15:2228-2232. [PMID: 38373310 DOI: 10.1021/acs.jpclett.3c03244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2024]
Abstract
The phase transformation from δ- to α-CsPbI3has garnered extensive research interest. However, detailed understanding of this structural transformation at atomistic scale remains elusive. Here, we reported the full atomistic molecular dynamics simulation of this important phase transformation using an enhanced sampling method, Metadynamics (MetaD). Particularly, two-stage of dynamic transformation related to [PbI3]- chains' motions was observed, namely, the intrachain rearrangement followed by interchain connection. Moreover, the dynamic motion of Cs+ cations plays an important role in facilitating the interchain connection kinetically. The insights reported in this work will provide valuable guidance for further advancing the understanding of phase transformation of CsPbI3.
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Affiliation(s)
- Hang Lyu
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
| | - Haibin Su
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
| | - Zhenyang Lin
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
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4
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Liang Y, Li F, Cui X, Lv T, Stampfl C, Ringer SP, Yang X, Huang J, Zheng R. Toward stabilization of formamidinium lead iodide perovskites by defect control and composition engineering. Nat Commun 2024; 15:1707. [PMID: 38402258 PMCID: PMC10894298 DOI: 10.1038/s41467-024-46044-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 02/08/2024] [Indexed: 02/26/2024] Open
Abstract
Phase instability poses a serious challenge to the commercialization of formamidinium lead iodide (FAPbI3)-based solar cells and optoelectronic devices. Here, we combine density functional theory and machine learning molecular dynamics simulations, to investigate the mechanism driving the undesired α-δ phase transition of FAPbI3. Prevalent iodine vacancies and interstitials can significantly expedite the structural transition kinetics by inducing robust covalency during transition states. Extrinsically, the detrimental roles of atmospheric moisture and oxygen in degrading the FAPbI3 perovskite phase are also rationalized. Significantly, we discover the compositional design principles by categorizing that A-site engineering primarily governs thermodynamics, whereas B-site doping can effectively manipulate the kinetics of the phase transition in FAPbI3, highlighting lanthanide ions as promising B-site substitutes. A-B mixed doping emerges as an efficient strategy to synergistically stabilize α-FAPbI3, as experimentally demonstrated by substantially higher initial optoelectronic characteristics and significantly enhanced phase stability in Cs-Eu doped FAPbI3 as compared to its Cs-doped counterpart. This study provides scientific guidance for the design and optimization of long-term stable FAPbI3-based solar cells and other optoelectronic devices through defect control and synergetic composition engineering.
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Affiliation(s)
- Yuhang Liang
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW 2006, Australia.
- School of Physics, The University of Sydney, Sydney, NSW, 2006, Australia.
| | - Feng Li
- School of Physics, The University of Sydney, Sydney, NSW, 2006, Australia.
| | - Xiangyuan Cui
- School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, Sydney, NSW, 2006, Australia.
| | - Taoyuze Lv
- School of Physics, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Catherine Stampfl
- School of Physics, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Simon P Ringer
- School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Xudong Yang
- State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, China
- Center of Hydrogen Science, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
- Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University, Shanghai, 201210, China
| | - Jun Huang
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW 2006, Australia.
| | - Rongkun Zheng
- School of Physics, The University of Sydney, Sydney, NSW, 2006, Australia.
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5
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Chen J, Deger C, Su ZH, Wang KL, Zhu GP, Wu JJ, He BC, Chen CH, Wang T, Gao XY, Yavuz I, Lou YH, Wang ZK, Liao LS. Magnetic-biased chiral molecules enabling highly oriented photovoltaic perovskites. Natl Sci Rev 2024; 11:nwad305. [PMID: 38213530 PMCID: PMC10776365 DOI: 10.1093/nsr/nwad305] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 11/01/2023] [Accepted: 11/24/2023] [Indexed: 01/13/2024] Open
Abstract
The interaction between sites A, B and X with passivation molecules is restricted when the conventional passivation strategy is applied in perovskite (ABX3) photovoltaics. Fortunately, the revolving A-site presents an opportunity to strengthen this interaction by utilizing an external field. Herein, we propose a novel approach to achieving an ordered magnetic dipole moment, which is regulated by a magnetic field via the coupling effect between the chiral passivation molecule and the A-site (formamidine ion) in perovskites. This strategy can increase the molecular interaction energy by approximately four times and ensure a well-ordered molecular arrangement. The quality of the deposited perovskite film is significantly optimized with inhibited nonradiative recombination. It manages to reduce the open-circuit voltage loss of photovoltaic devices to 360 mV and increase the power conversion efficiency to 25.22%. This finding provides a new insight into the exploration of A-sites in perovskites and offers a novel route to improving the device performance of perovskite photovoltaics.
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Affiliation(s)
- Jing Chen
- Institute of Functional Nano & Soft Materials (FUNSOM), Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou 215123, China
| | - Caner Deger
- Department of Physics, Marmara University, Ziverbey 34722, Turkey
| | - Zhen-Huang Su
- Shanghai Synchrotron Radiation Facility (SSRF), Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, China
| | - Kai-Li Wang
- Institute of Functional Nano & Soft Materials (FUNSOM), Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou 215123, China
| | - Guang-Peng Zhu
- Institute of Functional Nano & Soft Materials (FUNSOM), Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou 215123, China
| | - Jun-Jie Wu
- Institute of Functional Nano & Soft Materials (FUNSOM), Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou 215123, China
| | - Bing-Chen He
- Shanghai Synchrotron Radiation Facility (SSRF), Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, China
| | - Chun-Hao Chen
- Institute of Functional Nano & Soft Materials (FUNSOM), Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou 215123, China
| | - Tao Wang
- Institute of Functional Nano & Soft Materials (FUNSOM), Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou 215123, China
| | - Xing-Yu Gao
- Shanghai Synchrotron Radiation Facility (SSRF), Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, China
| | - Ilhan Yavuz
- Department of Physics, Marmara University, Ziverbey 34722, Turkey
| | - Yan-Hui Lou
- College of Energy, Soochow Institute for Energy and Materials Innovations, Soochow University, Suzhou 215006, China
| | - Zhao-Kui Wang
- Institute of Functional Nano & Soft Materials (FUNSOM), Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou 215123, China
| | - Liang-Sheng Liao
- Institute of Functional Nano & Soft Materials (FUNSOM), Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou 215123, China
- Macao Institute of Materials Science and Engineering, Macau University of Science and Technology, Macau, China
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6
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Yu C, Kawakita Y, Kikuchi T, Kofu M, Honda T, Zhang Z, Zhang Z, Liu Y, Liu SF, Li B. Atomic Structure and Dynamics of Organic-Inorganic Hybrid Perovskite Formamidinium Lead Iodide. J Phys Chem Lett 2024; 15:329-338. [PMID: 38170631 DOI: 10.1021/acs.jpclett.3c02498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
The atomic dynamic behaviors of formamidinium lead iodide [HC(NH2)2PbI3] are critical for understanding and improving photovoltaic performances. However, they remain unclear. Here, we investigate the structural phase transitions and the reorientation dynamics of the formamidinium cation [HC(NH2)2+, FA+] of FAPbI3 using neutron scattering techniques. Two structural phase transitions occur with decreasing temperature, from cubic to tetragonal phase at 285 K and then to another tetragonal at 140 K, accompanied by gradually frozen reorientation of FA cations. The nearly isotropic reorientation in the cubic phase is suppressed to reorientation motions involving a two-fold (C2) rotation along the N···N axis and a four-fold (C4) rotation along the C-H axis in the tetragonal phase, and eventually to local disordered motion as a partial C4 along the C-H axis in another tetragonal phase, thereby indicating an intimate interplay between lattice and orientation degrees of freedom in the hybrid perovskite materials. The present complete atomic structure and dynamics provide a solid standing point to understand and then improve photovoltaic properties of organic-inorganic hybrid perovskites in the future.
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Affiliation(s)
- Chenyang Yu
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, Liaoning 110016, China
- School of Materials Science and Engineering, University of Science and Technology of China, Shenyang, Liaoning 110016, China
| | | | - Tatsuya Kikuchi
- J-PARC Center, Japan Atomic Energy Agency, Tokai 319-1195, Japan
| | - Maiko Kofu
- J-PARC Center, Japan Atomic Energy Agency, Tokai 319-1195, Japan
| | - Takashi Honda
- Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tokai, Ibaraki 319-1106, Japan
| | - Zhe Zhang
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, Liaoning 110016, China
- School of Materials Science and Engineering, University of Science and Technology of China, Shenyang, Liaoning 110016, China
| | - Zhao Zhang
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, Liaoning 110016, China
- School of Materials Science and Engineering, University of Science and Technology of China, Shenyang, Liaoning 110016, China
| | - Yucheng Liu
- School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, Shaanxi 710119, China
| | - Shengzhong Frank Liu
- School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, Shaanxi 710119, China
| | - Bing Li
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, Liaoning 110016, China
- School of Materials Science and Engineering, University of Science and Technology of China, Shenyang, Liaoning 110016, China
- J-PARC Center, Japan Atomic Energy Agency, Tokai 319-1195, Japan
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7
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Luo T, Chen R, Zhang G, Li L, Wu H, Zhang W, Chen W, Chang H. MASCN Surface Treatment to Reduce Phase Transition Temperature and Regulate Strain for Efficient and Stable α-FAPbI 3 Perovskite Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2023; 15:38496-38506. [PMID: 37535705 DOI: 10.1021/acsami.3c07902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/05/2023]
Abstract
The fabrication of α-FAPbI3 perovskite films usually requires high temperature annealing above 150 °C, and the residual tensile strain in the films seriously affects the stability of α-FAPbI3 by converting to δ-phase FAPbI3. Here, we use MASCN surface treatment of FAPbI3 films to induce a rotation of the coplanar octahedron [PbI6]4- to the metric octahedron for the strong interaction of SCN- with Pb2+, converting δ-FAPbI3 into α-FAPbI3 highly crystalline films at room temperature. The optimized FAPbI3 films have high stability due to releasing residual tensile strains after MASCN treatment. The efficiency of the MASCN-treated unannealed FAPbI3 PSC is 19.03%, while the optimized FAPbI3 annealed at 100 °C shows a maximum PCE of 21.95% on a small area. The solar cell stability for humidity, light, and thermal stability are significantly improved. The MASCN treated FAPbI3 achieves a PCE of 15.32% on a PSC module with an effective area of 9.6 cm2 and maintains an initial efficiency of 94.1% after 100 days of ageing at 85 °C and 85% humidity.
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Affiliation(s)
- Tianyuan Luo
- State Key Laboratory of Material Processing and Die & Mold Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
- Shenzhen R&D Center of Huazhong University of Science and Technology, Shenzhen 518000, PRC
| | - Rui Chen
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Gaojie Zhang
- State Key Laboratory of Material Processing and Die & Mold Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Luji Li
- State Key Laboratory of Material Processing and Die & Mold Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Hao Wu
- State Key Laboratory of Material Processing and Die & Mold Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Wenfeng Zhang
- State Key Laboratory of Material Processing and Die & Mold Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Wei Chen
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Haixin Chang
- State Key Laboratory of Material Processing and Die & Mold Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
- Shenzhen R&D Center of Huazhong University of Science and Technology, Shenzhen 518000, PRC
- Institute for Quantum Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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8
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Deng Y, Fu S, Guo J, Xu X, Li H. Anisotropic Collective Variables with Machine Learning Potential for Ab Initio Crystallization of Complex Ceramics. ACS NANO 2023; 17:14099-14113. [PMID: 37458408 DOI: 10.1021/acsnano.3c04602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/26/2023]
Abstract
Enhanced sampling molecular dynamics (MD) simulations have been extensively used in the phase transition study of simple crystalline materials, such as aluminum, silica, and ice. However, MD simulation of the crystallization process for complex crystalline materials still faces a formidable challenge due to their multicomponent induced multiphase problem. Here, we realize the ab initio accuracy MD crystallization simulations of complex ceramics by using anisotropic collective variables (CVs) and machine learning (ML) potential. The anisotropic X-ray diffraction intensity CVs provide precise identification of complex crystal structures with detailed crystallography information, while the ML potential makes it feasible to further perform enhanced sampling simulations with ab initio accuracy. We verify the universality and accuracy of this method through complex ceramics with three kinds of representative structures, i.e., Ti3SiC2 for the MAX structure, zircon for the mineral structure, and lead zirconate titanate for the perovskite structure. It demonstrates exceptional efficiency and ab initio quality in achieving crystallization and generating free energy surfaces of all these ceramics, facilitating the analysis and design of complex crystalline materials.
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Affiliation(s)
- Yuanpeng Deng
- Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology and Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology, Harbin 150090, China
| | - Shubin Fu
- Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology and Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology, Harbin 150090, China
| | - Jingran Guo
- Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology and Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology, Harbin 150090, China
| | - Xiang Xu
- Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology and Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology, Harbin 150090, China
| | - Hui Li
- Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology and Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology, Harbin 150090, China
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9
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Luo Y, Liu K, Yang L, Feng W, Zheng L, Shen L, Jin Y, Fang Z, Song P, Tian W, Xu P, Li Y, Tian C, Xie L, Wei Z. Dissolved-Cl 2 triggered redox reaction enables high-performance perovskite solar cells. Nat Commun 2023; 14:3738. [PMID: 37349332 DOI: 10.1038/s41467-023-39260-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 06/05/2023] [Indexed: 06/24/2023] Open
Abstract
Constructing 2D/3D perovskite heterojunctions is effective for the surface passivation of perovskite solar cells (PSCs). However, previous reports that studying perovskite post-treatment only physically deposits 2D perovskite on the 3D perovskite, and the bulk 3D perovskite remains defective. Herein, we propose Cl2-dissolved chloroform as a multifunctional solvent for concurrently constructing 2D/3D perovskite heterojunction and inducing the secondary growth of the bulk grains. The mechanism of how Cl2 affects the performance of PSCs is clarified. Specifically, the dissolved Cl2 reacts with the 3D perovskite, leading to Cl/I ionic exchange and Ostwald ripening of the bulk grains. The generated Cl- further diffuses to passivate the bulk crystal and buried interface of PSCs. Hexylammonium bromide dissolved in the solvent reacts with the residual PbI2 to form 2D/3D heterojunctions on the surface. As a result, we achieved high-performance PSCs with a champion efficiency of 24.21% and substantially improved thermal, ambient, and operational stability.
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Affiliation(s)
- Yujie Luo
- Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing, Institute of Luminescent Materials and Information Displays, College of Materials Science and Engineering, Huaqiao University, Xiamen, 361021, P.R. China
| | - Kaikai Liu
- Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing, Institute of Luminescent Materials and Information Displays, College of Materials Science and Engineering, Huaqiao University, Xiamen, 361021, P.R. China
| | - Liu Yang
- Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing, Institute of Luminescent Materials and Information Displays, College of Materials Science and Engineering, Huaqiao University, Xiamen, 361021, P.R. China
| | - Wenjing Feng
- Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing, Institute of Luminescent Materials and Information Displays, College of Materials Science and Engineering, Huaqiao University, Xiamen, 361021, P.R. China
| | - Lingfang Zheng
- Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing, Institute of Luminescent Materials and Information Displays, College of Materials Science and Engineering, Huaqiao University, Xiamen, 361021, P.R. China
| | - Lina Shen
- Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing, Institute of Luminescent Materials and Information Displays, College of Materials Science and Engineering, Huaqiao University, Xiamen, 361021, P.R. China
| | - Yongbin Jin
- Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing, Institute of Luminescent Materials and Information Displays, College of Materials Science and Engineering, Huaqiao University, Xiamen, 361021, P.R. China
| | - Zheng Fang
- Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing, Institute of Luminescent Materials and Information Displays, College of Materials Science and Engineering, Huaqiao University, Xiamen, 361021, P.R. China
| | - Peiquan Song
- Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing, Institute of Luminescent Materials and Information Displays, College of Materials Science and Engineering, Huaqiao University, Xiamen, 361021, P.R. China
| | - Wanjia Tian
- Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing, Institute of Luminescent Materials and Information Displays, College of Materials Science and Engineering, Huaqiao University, Xiamen, 361021, P.R. China
| | - Peng Xu
- Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing, Institute of Luminescent Materials and Information Displays, College of Materials Science and Engineering, Huaqiao University, Xiamen, 361021, P.R. China
| | - Yuqing Li
- Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing, Institute of Luminescent Materials and Information Displays, College of Materials Science and Engineering, Huaqiao University, Xiamen, 361021, P.R. China
| | - Chengbo Tian
- Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing, Institute of Luminescent Materials and Information Displays, College of Materials Science and Engineering, Huaqiao University, Xiamen, 361021, P.R. China
| | - Liqiang Xie
- Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing, Institute of Luminescent Materials and Information Displays, College of Materials Science and Engineering, Huaqiao University, Xiamen, 361021, P.R. China.
| | - Zhanhua Wei
- Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing, Institute of Luminescent Materials and Information Displays, College of Materials Science and Engineering, Huaqiao University, Xiamen, 361021, P.R. China.
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10
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Li T, Xiong Q, Hu C, Wang C, Zhang N, Lien SY, Gao P. Improving Crystallization and Stability of Perovskite Solar Cells Using a Low-Temperature Treated A-Site Cation Solution in the Sequential Deposition. Molecules 2023; 28:molecules28104103. [PMID: 37241843 DOI: 10.3390/molecules28104103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Revised: 05/10/2023] [Accepted: 05/12/2023] [Indexed: 05/28/2023] Open
Abstract
The two-step sequential deposition is a commonly used method by researchers for fabricating perovskite solar cells (PSCs) due to its reproducibility and tolerant preparation conditions. However, the less-than-favorable diffusive processes in the preparation process often result in subpar crystalline quality in the perovskite films. In this study, we employed a simple strategy to regulate the crystallization process by lowering the temperature of the organic-cation precursor solutions. By doing so, we minimized interdiffusion processes between the organic cations and pre-deposited lead iodide (PbI2) film under poor crystallization conditions. This allowed for a homogenous perovskite film with improved crystalline orientation when transferred to appropriate environmental conditions for annealing. As a result, a boosted power conversion efficiency (PCE) was achieved in PSCs tested for 0.1 cm2 and 1 cm2, with the former exhibiting a PCE of 24.10% and the latter of 21.56%, compared to control PSCs, which showed a PCE of 22.65% and 20.69%, respectively. Additionally, the strategy increased device stability, with the cells holding 95.8% and 89.4% of the initial efficiency even after 7000 h of aging under nitrogen or 20-30% relative humidity and 25 °C. This study highlights a promising low-temperature-treated (LT-treated) strategy compatible with other PSCs fabrication techniques, adding a new possibility for temperature regulation during crystallization.
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Affiliation(s)
- Tinghao Li
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, China
- Laboratory for Advanced Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institute, Chinese Academy of Sciences, Xiamen 361021, China
| | - Qiu Xiong
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- Laboratory for Advanced Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institute, Chinese Academy of Sciences, Xiamen 361021, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chongzhu Hu
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- Laboratory for Advanced Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institute, Chinese Academy of Sciences, Xiamen 361021, China
| | - Can Wang
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- Laboratory for Advanced Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institute, Chinese Academy of Sciences, Xiamen 361021, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ni Zhang
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- Laboratory for Advanced Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institute, Chinese Academy of Sciences, Xiamen 361021, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shui-Yang Lien
- School of Opto-Electronic and Communication Engineering, Xiamen University of Technology, Xiamen 361024, China
| | - Peng Gao
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- Laboratory for Advanced Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institute, Chinese Academy of Sciences, Xiamen 361021, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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11
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Ge Y, Wang H, Wang C, Wang C, Guan H, Shao W, Wang T, Ke W, Tao C, Fang G. Intermediate Phase Engineering with 2,2-Azodi(2-Methylbutyronitrile) for Efficient and Stable Perovskite Solar Cells. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023:e2210186. [PMID: 36961356 DOI: 10.1002/adma.202210186] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 02/17/2023] [Indexed: 05/17/2023]
Abstract
Sequential deposition has been widely employed to modulate the crystallization of perovskite solar cells because it can avoid the formation of nucleation centers and even initial crystallization in the precursor solution. However, challenges remain in overcoming the incomplete and random transformation of PbI2 films with organic ammonium salts. Herein, a unique intermediate phase engineering strategy has been developed by simultaneously introducing 2,2-azodi(2-methylbutyronitrile) (AMBN) to both PbI2 and ammonium salt solutions to regulate perovskite crystallization. AMBN not only coordinates with PbI2 to form a favorably mesoporous PbI2 film due to the coordination between Pb2+ and the cyano group (C≡N), but also suppresses the vigorous activity of FA+ ions by interacting with FAI, leading to the full PbI2 transformation with the preferred orientation. Therefore, perovskites with favorable facet orientations are obtained, and the defects are largely suppressed owing to the passivation of uncoordinated Pb2+ and FA+ . As a result, a champion power conversion efficiency over 25% with a stabilized efficiency of 24.8% is achieved. Moreover, the device exhibits an improved operational stability, retaining 96% of initial power conversion efficiency under 1000 h continuous white-light illumination with an intensity of 100 mW cm-2 at ≈55 °C in N2 atmosphere.
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Affiliation(s)
- Yansong Ge
- Key Lab of Artificial Micro- and Nano-Structures of Ministry of Education of China, School of Physics and Technology, Wuhan University, Wuhan, Hubei, 430072, China
| | - Haibing Wang
- Key Lab of Artificial Micro- and Nano-Structures of Ministry of Education of China, School of Physics and Technology, Wuhan University, Wuhan, Hubei, 430072, China
| | - Cheng Wang
- Key Lab of Artificial Micro- and Nano-Structures of Ministry of Education of China, School of Physics and Technology, Wuhan University, Wuhan, Hubei, 430072, China
| | - Chen Wang
- Key Lab of Artificial Micro- and Nano-Structures of Ministry of Education of China, School of Physics and Technology, Wuhan University, Wuhan, Hubei, 430072, China
| | - Hongling Guan
- Key Lab of Artificial Micro- and Nano-Structures of Ministry of Education of China, School of Physics and Technology, Wuhan University, Wuhan, Hubei, 430072, China
| | - Wenlong Shao
- Key Lab of Artificial Micro- and Nano-Structures of Ministry of Education of China, School of Physics and Technology, Wuhan University, Wuhan, Hubei, 430072, China
| | - Ti Wang
- Key Lab of Artificial Micro- and Nano-Structures of Ministry of Education of China, School of Physics and Technology, Wuhan University, Wuhan, Hubei, 430072, China
| | - Weijun Ke
- Key Lab of Artificial Micro- and Nano-Structures of Ministry of Education of China, School of Physics and Technology, Wuhan University, Wuhan, Hubei, 430072, China
| | - Chen Tao
- Key Lab of Artificial Micro- and Nano-Structures of Ministry of Education of China, School of Physics and Technology, Wuhan University, Wuhan, Hubei, 430072, China
| | - Guojia Fang
- Key Lab of Artificial Micro- and Nano-Structures of Ministry of Education of China, School of Physics and Technology, Wuhan University, Wuhan, Hubei, 430072, China
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12
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Neha, Tiwari V, Mondal S, Kumari N, Karmakar T. Collective Variables for Crystallization Simulations-from Early Developments to Recent Advances. ACS OMEGA 2023; 8:127-146. [PMID: 36643553 PMCID: PMC9835087 DOI: 10.1021/acsomega.2c06310] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 12/08/2022] [Indexed: 03/11/2024]
Abstract
Crystallization is an important physicochemical process which has relevance in material science, biology, and the environment. Decades of experimental and theoretical efforts have been made to understand this fundamental symmetry-breaking transition. While experiments provide equilibrium structures and shapes of crystals, they are limited to unraveling how molecules aggregate to form crystal nuclei that subsequently transform into bulk crystals. Computer simulations, mainly molecular dynamics (MD), can provide such microscopic details during the early stage of a crystallization event. Crystallization is a rare event that takes place in time scales much longer than a typical equilibrium MD simulation can sample. This inadequate sampling of the MD method can be easily circumvented by the use of enhanced sampling (ES) simulations. In most of the ES methods, the fluctuations of a system's slow degrees of freedom, called collective variables (CVs), are enhanced by applying a bias potential. This transforms the system from one state to the other within a short time scale. The most crucial part of such CV-based ES methods is to find suitable CVs, which often needs intuition and several trial-and-error optimization steps. Over the years, a plethora of CVs has been developed and applied in the study of crystallization. In this review, we provide a brief overview of CVs that have been developed and used in ES simulations to study crystallization from melt or solution. These CVs can be categorized mainly into four types: (i) spherical particle-based, (ii) molecular template-based, (iii) physical property-based, and (iv) CVs obtained from dimensionality reduction techniques. We present the context-based evolution of CVs, discuss the current challenges, and propose future directions to further develop effective CVs for the study of crystallization of complex systems.
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Affiliation(s)
| | | | | | | | - Tarak Karmakar
- Department of Chemistry, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi110016, India
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13
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Gao Q, Qi J, Chen K, Xia M, Hu Y, Mei A, Han H. Halide Perovskite Crystallization Processes and Methods in Nanocrystals, Single Crystals, and Thin Films. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2200720. [PMID: 35385587 DOI: 10.1002/adma.202200720] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Revised: 03/27/2022] [Indexed: 06/14/2023]
Abstract
Halide perovskite semiconductors with extraordinary optoelectronic properties have been fascinatedly studied. Halide perovskite nanocrystals, single crystals, and thin films have been prepared for various fields, such as light emission, light detection, and light harvesting. High-performance devices rely on high crystal quality determined by the nucleation and crystal growth process. Here, the fundamental understanding of the crystallization process driven by supersaturation of the solution is discussed and the methods for halide perovskite crystals are summarized. Supersaturation determines the proportion and the average Gibbs free energy changes for surface and volume molecular units involved in the spontaneous aggregation, which could be stable in the solution and induce homogeneous nucleation only when the solution exceeds a required minimum critical concentration (Cmin ). Crystal growth and heterogeneous nucleation are thermodynamically easier than homogeneous nucleation due to the existent surfaces. Nanocrystals are mainly prepared via the nucleation-dominated process by rapidly increasing the concentration over Cmin , single crystals are mainly prepared via the growth-dominated process by keeping the concentration between solubility and Cmin , while thin films are mainly prepared by compromising the nucleation and growth processes to ensure compactness and grain sizes. Typical strategies for preparing these three forms of halide perovskites are also reviewed.
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Affiliation(s)
- Qiaojiao Gao
- Michael Grätzel Center for Mesoscopic Solar Cells, Wuhan National Laboratory for Optoelectronics, Key Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China
| | - Jianhang Qi
- Michael Grätzel Center for Mesoscopic Solar Cells, Wuhan National Laboratory for Optoelectronics, Key Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China
| | - Kai Chen
- Michael Grätzel Center for Mesoscopic Solar Cells, Wuhan National Laboratory for Optoelectronics, Key Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China
| | - Minghao Xia
- Michael Grätzel Center for Mesoscopic Solar Cells, Wuhan National Laboratory for Optoelectronics, Key Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China
| | - Yue Hu
- Michael Grätzel Center for Mesoscopic Solar Cells, Wuhan National Laboratory for Optoelectronics, Key Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China
| | - Anyi Mei
- Michael Grätzel Center for Mesoscopic Solar Cells, Wuhan National Laboratory for Optoelectronics, Key Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China
| | - Hongwei Han
- Michael Grätzel Center for Mesoscopic Solar Cells, Wuhan National Laboratory for Optoelectronics, Key Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China
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14
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Fan Z, Xing C, Tan Y, Xu J, Liu L, Zhou Y, Jiang Y. The effect of CO 2-doped spiro-OMeTAD hole transport layer on FA (1−x)Cs xPbI 3 perovskite solar cells. JOURNAL OF CHEMICAL RESEARCH 2022. [DOI: 10.1177/17475198221136079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Black-phase formamidinium lead iodine with 1.48 eV bandgap is considered to be the most promising material for improving the near-theoretical limit efficiency of perovskite solar cells, but at room temperature, black-phase formamidinium lead iodine easily transforms into the yellow non-perovskite phase formamidinium lead iodine. Here, different ratios of Cs+-incorporated formamidinium lead iodine prepared by one-step processing with the stability and power conversion efficiency of formamidinium lead iodine perovskite solar cells are investigated. FA0.85Cs0.15PbI3 shows the highest power conversion efficiency of 10.63% (Voc = 1.04 V, Jsc = 16.81 mA cm−2, and fill factor = 0.60), and the unencapsulated device maintained 60% of the initial power conversion efficiency after storage in air with 40% humidity for 186 h with an active area of 0.1 cm2, when the ratios of Cs+ reached 15% ( x = 0.15) in formamidinium lead iodine. However, the efficiency of perovskite solar cell–based formamidinium lead iodine is still low. In this work, a simple but an effective strategy was carried out to rapidly and fully oxidize hole transport layer solution by doping CO2 or O2 under ultraviolet light irradiation to increase the conductivity of hole transport layer, thereby improving the power conversion efficiency of solar cells. The results show that FA0.85Cs0.15PbI3 solar cells by CO2-doped hole transport layer for 90 s exhibited the highest power conversion efficiency of 16.11% (VOC = 1.11 V, JSC = 19.73 mA cm−2, and fill factor = 0.74). The improved photovoltaic performance is attributed to CO2-doped spiro-OMeTAD increasing charge carrier density and accelerating charge separation, thereby inducing higher conductivity. CO2 or O2 doped can rapidly and fully oxidize spiro-OMeTAD, and reduce the solar cell fabrication time; it is beneficial to the commercial use of perovskite solar cells.
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Affiliation(s)
- Zhicheng Fan
- Hubei Key Laboratory for High-efficiency Utilization of Solar Energy and Operation Control of Energy Storage System, Hubei University of Technology, Wuhan, China
- School of Electrical & Electronic Engineering, Hubei University of Technology, Wuhan, China
| | - Chuwu Xing
- School of Materials Science and Engineering, Hubei University, Wuhan, China
| | - Yi Tan
- School of Science, Hubei University of Technology, Wuhan, China
| | - Jinxia Xu
- Hubei Key Laboratory for High-efficiency Utilization of Solar Energy and Operation Control of Energy Storage System, Hubei University of Technology, Wuhan, China
- School of Science, Hubei University of Technology, Wuhan, China
| | - Lingyun Liu
- Hubei Key Laboratory for High-efficiency Utilization of Solar Energy and Operation Control of Energy Storage System, Hubei University of Technology, Wuhan, China
- School of Science, Hubei University of Technology, Wuhan, China
| | - Yuanming Zhou
- Hubei Key Laboratory for High-efficiency Utilization of Solar Energy and Operation Control of Energy Storage System, Hubei University of Technology, Wuhan, China
- School of Science, Hubei University of Technology, Wuhan, China
| | - Yan Jiang
- Hubei Key Laboratory for High-efficiency Utilization of Solar Energy and Operation Control of Energy Storage System, Hubei University of Technology, Wuhan, China
- School of Science, Hubei University of Technology, Wuhan, China
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15
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Duan C, Liang Z, Cao J, Jin B, Ming Y, Wang S, Ma B, Ye T, Wu C. Balancing Lattice Strain by Embedded Ionic Liquid for the Stabilization of Formamidinium-Based Perovskite Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2022; 14:43298-43307. [PMID: 36099528 DOI: 10.1021/acsami.2c11677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Formamidinium (FA)-based perovskites remained state-of-the-art in the field of perovskite solar cells (PSCs) owing to the exceptional absorption and carrier transport properties, while the transition from photoactive (α-) to photoinactive (δ-FAPbI3) phase is the impediment that causes performance degradation and thus limits the deployment of FA-based PSCs. The unfavorable phase transition originates from tensile strain in the FAPbI3 crystal lattice, which undergoes structural reorganization for lattice strain balancing. In this work, we found that the ionic liquid (IL) could be used as the strain coordinator to balance the lattice strain for stability improvement of FAPbI3 perovskite. We theoretically studied the electronic coupling between IL and FAPbI3 and unraveled the originality of the IL-induced compressive strain. The strain-relaxed α-FAPbI3 by IL showed robust stability against environmental factors, which can withstand ambient aging for 40 days without any phase transition or decomposition. Moreover, the strain-relaxed perovskite films showed a lower trap density and resulted in conversion efficiency improvement from 18.27 to 19.88%. Based on this novel strain engineering strategy, the unencapsulated PSCs maintained 90% of their initial efficiency under ambient-air aging for 50 days.
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Affiliation(s)
- Chenhui Duan
- Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, School of Materials Science and Engineering, Hubei University, Wuhan 430062, China
| | - Zihui Liang
- Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, School of Materials Science and Engineering, Hubei University, Wuhan 430062, China
| | - Jinguo Cao
- Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, School of Materials Science and Engineering, Hubei University, Wuhan 430062, China
| | - Bowen Jin
- Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, School of Materials Science and Engineering, Hubei University, Wuhan 430062, China
| | - Yidong Ming
- Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, School of Materials Science and Engineering, Hubei University, Wuhan 430062, China
| | - Shimin Wang
- Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, School of Materials Science and Engineering, Hubei University, Wuhan 430062, China
| | - Binghe Ma
- Ministry of Education Key Laboratory of Micro/Nano Systems for Aerospace, Northwestern Polytechnical University, Xi'an 710072, China
| | - Tao Ye
- Ministry of Education Key Laboratory of Micro/Nano Systems for Aerospace, Northwestern Polytechnical University, Xi'an 710072, China
| | - Congcong Wu
- Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, School of Materials Science and Engineering, Hubei University, Wuhan 430062, China
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16
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Huang X, Deng G, Zhan S, Cao F, Cheng F, Yin J, Li J, Wu B, Zheng N. Solvent Gaming Chemistry to Control the Quality of Halide Perovskite Thin Films for Photovoltaics. ACS CENTRAL SCIENCE 2022; 8:1008-1016. [PMID: 35912345 PMCID: PMC9336153 DOI: 10.1021/acscentsci.2c00385] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Indexed: 05/06/2023]
Abstract
Research on solvent chemistry, particularly for halide perovskite intermediates, has been advancing the development of perovskite solar cells (PSCs) toward commercial applications. A predictive understanding of solvent effects on the perovskite formation is thus essential. This work systematically discloses the relationship among the basicity of solvents, solvent-contained intermediate structures, and intermediate-to-perovskite α-FAPbI3 evolutions. Depending on their basicity, solvents exhibit their own favorite bonding selection with FA+ or Pb2+ cations by forming either hydrogen bonds or coordination bonds, resulting in two different kinds of intermediate structures. While both intermediates can be evolved into α-FAPbI3 below the δ-to-α thermodynamic temperature, the hydrogen-bond-favorable kind could form defect-less α-FAPbI3 via sidestepping the break of strong coordination bonds. The disclosed solvent gaming mechanism guides the solvent selection for fabricating high-quality perovskite films and thus high-performance PSCs and modules.
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Affiliation(s)
- Xiaofeng Huang
- State
Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative
Innovation Center of Chemistry for Energy Materials, National &
Local Joint Engineering Research Center of Preparation Technology
of Nanomaterials, College of Chemistry and Chemical Engineering, Pen-Tung
Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361005, China
| | - Guocheng Deng
- State
Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative
Innovation Center of Chemistry for Energy Materials, National &
Local Joint Engineering Research Center of Preparation Technology
of Nanomaterials, College of Chemistry and Chemical Engineering, Pen-Tung
Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361005, China
| | - Shaoqi Zhan
- Department
of Chemistry−BMC, Uppsala University, BMC Box 576, S-751 23 Uppsala, Sweden
| | - Fang Cao
- State
Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative
Innovation Center of Chemistry for Energy Materials, National &
Local Joint Engineering Research Center of Preparation Technology
of Nanomaterials, College of Chemistry and Chemical Engineering, Pen-Tung
Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361005, China
| | - Fangwen Cheng
- State
Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative
Innovation Center of Chemistry for Energy Materials, National &
Local Joint Engineering Research Center of Preparation Technology
of Nanomaterials, College of Chemistry and Chemical Engineering, Pen-Tung
Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361005, China
| | - Jun Yin
- State
Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative
Innovation Center of Chemistry for Energy Materials, National &
Local Joint Engineering Research Center of Preparation Technology
of Nanomaterials, College of Chemistry and Chemical Engineering, Pen-Tung
Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361005, China
- Innovation
Laboratory for Sciences and Technologies of Energy Materials of Fujian
Province (IKKEM), Xiamen 361102, China
| | - Jing Li
- State
Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative
Innovation Center of Chemistry for Energy Materials, National &
Local Joint Engineering Research Center of Preparation Technology
of Nanomaterials, College of Chemistry and Chemical Engineering, Pen-Tung
Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361005, China
- Innovation
Laboratory for Sciences and Technologies of Energy Materials of Fujian
Province (IKKEM), Xiamen 361102, China
| | - Binghui Wu
- State
Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative
Innovation Center of Chemistry for Energy Materials, National &
Local Joint Engineering Research Center of Preparation Technology
of Nanomaterials, College of Chemistry and Chemical Engineering, Pen-Tung
Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361005, China
- Innovation
Laboratory for Sciences and Technologies of Energy Materials of Fujian
Province (IKKEM), Xiamen 361102, China
| | - Nanfeng Zheng
- State
Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative
Innovation Center of Chemistry for Energy Materials, National &
Local Joint Engineering Research Center of Preparation Technology
of Nanomaterials, College of Chemistry and Chemical Engineering, Pen-Tung
Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361005, China
- Innovation
Laboratory for Sciences and Technologies of Energy Materials of Fujian
Province (IKKEM), Xiamen 361102, China
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17
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Manipulation of Crystallization Kinetics for Perovskite Photovoltaics Prepared Using Two-Step Method. CRYSTALS 2022. [DOI: 10.3390/cryst12060815] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
Two-step fabricated perovskite solar cells have attracted considerable attention because of their good reproducibility and controllable crystallization during production. Optimizing the quality of perovskite films plays a decisive role in realizing superb performance via a two-step method. Many breakthroughs have been achieved to obtain high-quality film from the perspective of manipulating crystallization kinetics in the two-step preparation process, which promotes the rapid development of perovskite photovoltaics. Therefore, focusing on the crystallization process in the two-step preparation process can provide a reliable basis for optimizing the performance of two-step devices. In this review, recent progress on regulating the crystallization process for two-step PSCs is systematically reviewed. Firstly, a specific description and discussion are provided on the crystallization process of perovskite in different two-step methods, including spin-coating, immersion and evaporation. Next, to obtain high-quality perovskite film via these two-step methods, current strategies of additive engineering, composition engineering, and solvent engineering for regulating the crystallization process for two-step perovskite are classified and investigated. Lastly, the challenges which hindering the performance of the two-step perovskite photovoltaics and an outlook toward further developments are proposed.
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18
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Invernizzi M, Parrinello M. Exploration vs Convergence Speed in Adaptive-Bias Enhanced Sampling. J Chem Theory Comput 2022; 18:3988-3996. [PMID: 35617155 PMCID: PMC9202311 DOI: 10.1021/acs.jctc.2c00152] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
In adaptive-bias
enhanced sampling methods, a bias potential is
added to the system to drive transitions between metastable states.
The bias potential is a function of a few collective variables and
is gradually modified according to the underlying free energy surface.
We show that when the collective variables are suboptimal, there is
an exploration–convergence tradeoff, and one must choose between
a quickly converging bias that will lead to fewer transitions or a
slower to converge bias that can explore the phase space more efficiently
but might require a much longer time to produce an accurate free energy
estimate. The recently proposed on-the-fly probability enhanced sampling
(OPES) method focuses on fast convergence, but there are cases where
fast exploration is preferred instead. For this reason, we introduce
a new variant of the OPES method that focuses on quickly escaping
metastable states at the expense of convergence speed. We illustrate
the benefits of this approach in prototypical systems and show that
it outperforms the popular metadynamics method.
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19
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Lodesani F, Menziani MC, Urata S, Pedone A. Biasing Crystallization in Fused Silica: An Assessment of Optimal Metadynamics Parameters. J Chem Phys 2022; 156:194501. [DOI: 10.1063/5.0089183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Metadynamics is a useful technique to study rare events such as crystallization. It has been only recently applied to study nucleation and crystallization in glass-forming liquids such as silicates but the optimal set of parameters to drive crystallization and obtaining converged Free Energy Surfaces is still unexplored. <p>In this work, we systematically investigated the effects of the simulation conditions to efficiently study the thermodynamics and mechanism of crystallization in highly viscous systems. As a prototype system, we used fused silica, which easily crystallizes to β-cristobalite through MetaD simulations, owing to its simple microstructure. We investigated the influence of the height, width, and bias factor used to define the biasing Gaussian potential, as well as the effects of the temperature and system size on the results. Among these parameters, the bias factor and temperature seem to be most effective to sample the free energy landscape of melt to crystal transition and reach convergence more quickly. We also demonstrate that the temperature rescaling from T > Tm is a reliable approach to recover free energy surfaces below Tm, provided that the temperature gap is below 600 K and the configurational space has been properly sampled. Finally, albeit a complete crystallization is hard to achieve with large simulation boxes, these can be reliably and effectively exploited to study the first stages of nucleation.
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Affiliation(s)
- Federica Lodesani
- Universita degli Studi di Modena e Reggio Emilia Dipartimento di Scienze Chimiche e Geologiche, Italy
| | - Maria Cristina Menziani
- Universita degli Studi di Modena e Reggio Emilia Dipartimento di Scienze Chimiche e Geologiche, Italy
| | - Shingo Urata
- Innovative Technology Laboratories, AGC Inc., Japan
| | - Alfonso Pedone
- Universita degli Studi di Modena e Reggio Emilia Dipartimento di Scienze Chimiche e Geologiche, Italy
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20
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Du T, Macdonald TJ, Yang RX, Li M, Jiang Z, Mohan L, Xu W, Su Z, Gao X, Whiteley R, Lin CT, Min G, Haque SA, Durrant JR, Persson KA, McLachlan MA, Briscoe J. Additive-Free, Low-Temperature Crystallization of Stable α-FAPbI 3 Perovskite. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2107850. [PMID: 34894160 DOI: 10.1002/adma.202107850] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/18/2021] [Indexed: 05/23/2023]
Abstract
Formamidinium lead triiodide (FAPbI3 ) is attractive for photovoltaic devices due to its optimal bandgap at around 1.45 eV and improved thermal stability compared with methylammonium-based perovskites. Crystallization of phase-pure α-FAPbI3 conventionally requires high-temperature thermal annealing at 150 °C whilst the obtained α-FAPbI3 is metastable at room temperature. Here, aerosol-assisted crystallization (AAC) is reported, which converts yellow δ-FAPbI3 into black α-FAPbI3 at only 100 °C using precursor solutions containing only lead iodide and formamidinium iodide with no chemical additives. The obtained α-FAPbI3 exhibits remarkably enhanced stability compared to the 150 °C annealed counterparts, in combination with improvements in film crystallinity and photoluminescence yield. Using X-ray diffraction, X-ray scattering, and density functional theory simulation, it is identified that relaxation of residual tensile strains, achieved through the lower annealing temperature and post-crystallization crystal growth during AAC, is the key factor that facilitates the formation of phase-stable α-FAPbI3 . This overcomes the strain-induced lattice expansion that is known to cause the metastability of α-FAPbI3 . Accordingly, pure FAPbI3 p-i-n solar cells are reported, facilitated by the low-temperature (≤100 °C) AAC processing, which demonstrates increases of both power conversion efficiency and operational stability compared to devices fabricated using 150 °C annealed films.
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Affiliation(s)
- Tian Du
- School of Engineering and Materials Science and Materials Research Institute, Queen Mary University of London, London, E1 4NS, UK
- Department of Materials and Centre for Processable Electronics, Imperial College, London, W12 0BZ, UK
| | - Thomas J Macdonald
- School of Engineering and Materials Science and Materials Research Institute, Queen Mary University of London, London, E1 4NS, UK
- Department of Chemistry and Centre for Processable Electronics, Imperial College, London, W12 0BZ, UK
| | - Ruo Xi Yang
- Materials Science Division, Lawrence Berkeley National Lab, 1 Cyclotron Rd. Berkeley, California, 94720, USA
| | - Meng Li
- Key Lab for Special Functional Materials of Ministry of Education, National & Local Joint Engineering Research Center for High-efficiency Display and Lighting Technology, School of Materials Science and Engineering, and Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng, 475004, China
| | - Zhongyao Jiang
- Department of Materials and Centre for Processable Electronics, Imperial College, London, W12 0BZ, UK
| | - Lokeshwari Mohan
- School of Engineering and Materials Science and Materials Research Institute, Queen Mary University of London, London, E1 4NS, UK
- Department of Materials and Centre for Processable Electronics, Imperial College, London, W12 0BZ, UK
| | - Weidong Xu
- Department of Chemistry and Centre for Processable Electronics, Imperial College, London, W12 0BZ, UK
| | - Zhenhuang Su
- Shanghai Synchrotron Radiation Facility (SSRF), Zhangjiang Laboratory, Shanghai Advanced Research Institute, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, 239 Zhangheng Road, Shanghai, 201204, China
| | - Xingyu Gao
- Shanghai Synchrotron Radiation Facility (SSRF), Zhangjiang Laboratory, Shanghai Advanced Research Institute, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, 239 Zhangheng Road, Shanghai, 201204, China
| | - Richard Whiteley
- School of Engineering and Materials Science and Materials Research Institute, Queen Mary University of London, London, E1 4NS, UK
| | - Chieh-Ting Lin
- Department of Materials and Centre for Processable Electronics, Imperial College, London, W12 0BZ, UK
| | - Ganghong Min
- Department of Chemistry and Centre for Processable Electronics, Imperial College, London, W12 0BZ, UK
| | - Saif A Haque
- Department of Chemistry and Centre for Processable Electronics, Imperial College, London, W12 0BZ, UK
| | - James R Durrant
- Department of Chemistry and Centre for Processable Electronics, Imperial College, London, W12 0BZ, UK
- SPECIFIC IKC, College of Engineering, Swansea University, Swansea, SA2 7AX, UK
| | - Kristin A Persson
- Molecular Foundry, Lawrence Berkeley National Lab, 1 Cyclotron Rd. Berkeley, California, 94720, USA
- Department of Materials Science and Engineering, University of California, Berkeley, 210 Hearst Mining Memorial Building, Berkeley, CA, 94720, USA
| | - Martyn A McLachlan
- Department of Materials and Centre for Processable Electronics, Imperial College, London, W12 0BZ, UK
| | - Joe Briscoe
- School of Engineering and Materials Science and Materials Research Institute, Queen Mary University of London, London, E1 4NS, UK
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21
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Huang X, Cheng F, Wu B, Zheng N. Intermediate Chemistry of Halide Perovskites: Origin, Evolution, and Application. J Phys Chem Lett 2022; 13:1765-1776. [PMID: 35167286 DOI: 10.1021/acs.jpclett.2c00013] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The preparation of solution-processed metal halide perovskites is interwoven with research on their intermediate chemistry. In this Perspective, molecule-level insights are provided into how Lewis base additives (LBAs), e.g., DMSO and NMP, facilitate powder-to-film formation processes (i.e., the chemical origin of intermediate structures, structural evolution of intermediate-to-perovskite phase transition, and device-based application of intermediate-evolved perovskites). LBAs interact with Lewis acid species (cationic A+ or B2+ sites) of ABX3 structures with separate probability in terms of coordination bonds or hydrogen bonds to form two types of intermediate structures, inducing significant differences within intermediate-to-perovskite processes. In addition, in-depth understanding of intermediate chemistry favors the multifaceted applications of solution-processed perovskites. A brief summary is finally provided together with a perspective on how intermediate chemistry determines perovskite properties and applications.
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Affiliation(s)
- Xiaofeng Huang
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, National & Local Joint Engineering Research Center of Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Pen-Tung Sah Institute of Micro-Nano Science and Technology, Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen University, Xiamen 361005, China
| | - Fangwen Cheng
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, National & Local Joint Engineering Research Center of Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Pen-Tung Sah Institute of Micro-Nano Science and Technology, Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen University, Xiamen 361005, China
| | - Binghui Wu
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, National & Local Joint Engineering Research Center of Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Pen-Tung Sah Institute of Micro-Nano Science and Technology, Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen University, Xiamen 361005, China
| | - Nanfeng Zheng
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, National & Local Joint Engineering Research Center of Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Pen-Tung Sah Institute of Micro-Nano Science and Technology, Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen University, Xiamen 361005, China
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22
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Ge C, Liu X, Yang Z, Li H, Dong Q. Thermal Dynamic Self‐healing Supramolecular Dopant Towards Efficient and Stable Flexible Perovskite Solar Cells. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202116602] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Chengda Ge
- Jilin University State Key Laboratory of Supramolecular Structure and Materials CHINA
| | - Xiaoting Liu
- Jilin University State Key Laboratory of Supramolecular Structure and Materials CHINA
| | - Ziqi Yang
- Jilin University State Key Laboratory of Supramolecular Structure and Materials CHINA
| | - Hanming Li
- Jilin University State Key Laboratory of Supramolecular Structure and Materials CHINA
| | - Qingfeng Dong
- Jilin University State Key Laboratory of Supramolecular Structure and Materials 2699 Qianjin Street 130012 Changchun CHINA
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23
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Ge C, Liu X, Yang Z, Li H, Dong Q. Thermal Dynamic Self-healing Supramolecular Dopant Towards Efficient and Stable Flexible Perovskite Solar Cells. Angew Chem Int Ed Engl 2021; 61:e202116602. [PMID: 34964219 DOI: 10.1002/anie.202116602] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Indexed: 11/11/2022]
Abstract
Flexible perovskite solar cells draw great attention due to their likeable traits like low cost, portability, light-weight, et al. However, mechanical stability is still the weak point in their practical application. Herein, we prepared efficient FPSC with remarkable mechanical stability by dynamic thermal self-healing effect, which can be realized by the usage of supramolecular adhesive. The colloidal adhesive was obtained by random copolymerization of acrylamide and n-butyl acrylate, which is amphiphilic, has a proper glass transition temperature and high density of hydrogen bond donors and receptors, providing the possibility of thermal dynamic repair of stress damage in FPSCs. The adhesive also greatly improves the leveling property of the precursor solution on the hydrophobic poly[bis(4-phenyl)(2,4,6-trimethylphenyl)]amine (PTAA) surface. PSCs containing this adhesive achieves more than 20% power conversion efficiency (PCE) on flexible substrates and 21.99% PCE on rigid substrates (certified PCE of 21.27%), with improved electron mobility and reduced defect concentration.
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Affiliation(s)
- Chengda Ge
- Jilin University, State Key Laboratory of Supramolecular Structure and Materials, CHINA
| | - Xiaoting Liu
- Jilin University, State Key Laboratory of Supramolecular Structure and Materials, CHINA
| | - Ziqi Yang
- Jilin University, State Key Laboratory of Supramolecular Structure and Materials, CHINA
| | - Hanming Li
- Jilin University, State Key Laboratory of Supramolecular Structure and Materials, CHINA
| | - Qingfeng Dong
- Jilin University, State Key Laboratory of Supramolecular Structure and Materials, 2699 Qianjin Street, 130012, Changchun, CHINA
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24
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Zhu N, Xu K, Xing J, Zhang J, Dai J. Ionic Liquid Passivation Eliminates Low- n Quantum Well Domains in Blue Quasi-2D Perovskite Films. ACS APPLIED MATERIALS & INTERFACES 2021; 13:57540-57547. [PMID: 34844410 DOI: 10.1021/acsami.1c15879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In quasi-two-dimensional (quasi-2D) perovskite films, carriers transport in the cascade structural systems involving various quantum wells (QWs) n, but their efficiency is limited by the severe nonradiative recombination within plentiful n = 1, 2, 3 domains induced by traditional ammonium bromide passivation. Here, we fabricate the quasi-2D films with the elimination of n = 1, 2, 3 domains by introducing the ionic liquid n-butylamine acetate (BAAc) instead of n-butylamine hydrobromide (BABr), which increases the photoluminescence quantum yield (PLQY) and lowers the surface roughness of films. Due to the anion exchange between BAAc and methylamine hydrobromide (MABr), BAAc exhibits a sole passivation effect on methylamine-based perovskites. As a result, the ionic liquid-derived perovskite light-emitting diodes (PeLEDs) display blue emission at 479 nm and show significantly improved performance on external quantum efficiency (EQE) and luminance. Our finding provides insights into the passivating effect of ionic liquid on quasi-2D perovskites and will benefit fabricating PeLEDs with enhanced performance.
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Affiliation(s)
- Ningning Zhu
- Key Laboratory of Eco-chemical Engineering, Key Laboratory of Optic-electric Sensing and Analytical Chemistry of Life Science, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Kaixuan Xu
- State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jun Xing
- Key Laboratory of Eco-chemical Engineering, Key Laboratory of Optic-electric Sensing and Analytical Chemistry of Life Science, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
| | - Jun Zhang
- State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
- Beijing Academy of Quantum Information Science, Beijing 100193, China
| | - Jiangnan Dai
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
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