1
|
Maziviero FV, Melo DMA, Medeiros RLBA, Oliveira ÂAS, Macedo HP, Braga RM, Morgado E. Advancements and Prospects in Perovskite Solar Cells: From Hybrid to All-Inorganic Materials. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:332. [PMID: 38392705 PMCID: PMC10892290 DOI: 10.3390/nano14040332] [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: 12/05/2023] [Accepted: 01/10/2024] [Indexed: 02/24/2024]
Abstract
Hybrid perovskites, materials composed of metals and organic substances in their structure, have emerged as potential materials for the new generation of photovoltaic cells due to a unique combination of optical, excitonic and electrical properties. Inspired by sensitization techniques on TiO2 substrates (DSSC), CH3NH3PbBr3 and CH3NH3PbI3 perovskites were studied as a light-absorbing layer as well as an electron-hole pair generator. Photovoltaic cells based on per-ovskites have electron and hole transport layers (ETL and HTL, respectively), separated by an ac-tive layer composed of perovskite itself. Major advances subsequently came in the preparation methods of these devices and the development of different architectures, which resulted in an efficiency exceeding 23% in less than 10 years. Problems with stability are the main barrier to the large-scale production of hybrid perovskites. Partially or fully inorganic perovskites appear promising to circumvent the instability problem, among which the black perovskite phase CsPbI3 (α-CsPbI3) can be highlighted. In more advanced studies, a partial or total substitution of Pb by Ge, Sn, Sb, Bi, Cu or Ti is proposed to mitigate potential toxicity problems and maintain device efficiency.
Collapse
Affiliation(s)
- Fernando Velcic Maziviero
- Postgraduate Program in Chemistry, Federal University of Rio Grande do Norte, Natal 59078-970, Brazil;
- Laboratório de Tecnologia Ambiental—LABTAM, Federal University of Rio Grande do Norte, Natal 59078-970, Brazil; (R.L.B.A.M.); (Â.A.S.O.); (H.P.M.); (R.M.B.)
| | - Dulce M. A. Melo
- Postgraduate Program in Chemistry, Federal University of Rio Grande do Norte, Natal 59078-970, Brazil;
- Laboratório de Tecnologia Ambiental—LABTAM, Federal University of Rio Grande do Norte, Natal 59078-970, Brazil; (R.L.B.A.M.); (Â.A.S.O.); (H.P.M.); (R.M.B.)
- Postgraduate Program in Materials Science and Engineering, Federal University of Rio Grande do Norte, Natal 59078-970, Brazil
| | - Rodolfo L. B. A. Medeiros
- Laboratório de Tecnologia Ambiental—LABTAM, Federal University of Rio Grande do Norte, Natal 59078-970, Brazil; (R.L.B.A.M.); (Â.A.S.O.); (H.P.M.); (R.M.B.)
- Postgraduate Program in Materials Science and Engineering, Federal University of Rio Grande do Norte, Natal 59078-970, Brazil
| | - Ângelo A. S. Oliveira
- Laboratório de Tecnologia Ambiental—LABTAM, Federal University of Rio Grande do Norte, Natal 59078-970, Brazil; (R.L.B.A.M.); (Â.A.S.O.); (H.P.M.); (R.M.B.)
| | - Heloísa P. Macedo
- Laboratório de Tecnologia Ambiental—LABTAM, Federal University of Rio Grande do Norte, Natal 59078-970, Brazil; (R.L.B.A.M.); (Â.A.S.O.); (H.P.M.); (R.M.B.)
- Postgraduate Program in Materials Science and Engineering, Federal University of Rio Grande do Norte, Natal 59078-970, Brazil
| | - Renata M. Braga
- Laboratório de Tecnologia Ambiental—LABTAM, Federal University of Rio Grande do Norte, Natal 59078-970, Brazil; (R.L.B.A.M.); (Â.A.S.O.); (H.P.M.); (R.M.B.)
- Agricultural School of Jundiaí, Federal University of Rio Grande do Norte, Macaíba 59280-000, Brazil
- Postgraduate Program in Chemical Engineering, Federal University of Rio Grande do Norte, Natal 59078-970, Brazil
| | - Edisson Morgado
- PETROBRAS R&D Centre (CENPES), Rio de Janeiro 21941-915, Brazil;
| |
Collapse
|
2
|
Afre RA, Pugliese D. Perovskite Solar Cells: A Review of the Latest Advances in Materials, Fabrication Techniques, and Stability Enhancement Strategies. MICROMACHINES 2024; 15:192. [PMID: 38398920 PMCID: PMC10890723 DOI: 10.3390/mi15020192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 01/23/2024] [Accepted: 01/25/2024] [Indexed: 02/25/2024]
Abstract
Perovskite solar cells (PSCs) are gaining popularity due to their high efficiency and low-cost fabrication. In recent decades, noticeable research efforts have been devoted to improving the stability of these cells under ambient conditions. Moreover, researchers are exploring new materials and fabrication techniques to enhance the performance of PSCs under various environmental conditions. The mechanical stability of flexible PSCs is another area of research that has gained significant attention. The latest research also focuses on developing tin-based PSCs that can overcome the challenges associated with lead-based perovskites. This review article provides a comprehensive overview of the latest advances in materials, fabrication techniques, and stability enhancement strategies for PSCs. It discusses the recent progress in perovskite crystal structure engineering, device construction, and fabrication procedures that has led to significant improvements in the photo conversion efficiency of these solar devices. The article also highlights the challenges associated with PSCs such as their poor stability under ambient conditions and discusses various strategies employed to enhance their stability. These strategies include the use of novel materials for charge transport layers and encapsulation techniques to protect PSCs from moisture and oxygen. Finally, this article provides a critical assessment of the current state of the art in PSC research and discusses future prospects for this technology. This review concludes that PSCs have great potential as a low-cost alternative to conventional silicon-based solar cells but require further research to improve their stability under ambient conditions in view of their definitive commercialization.
Collapse
Affiliation(s)
- Rakesh A. Afre
- Centre of Excellence in Nanotechnology (CoEN), Faculty of Engineering, Assam down town University (AdtU), Guwahati 781026, Assam, India;
| | - Diego Pugliese
- National Institute of Metrological Research (INRiM), Strada delle Cacce 91, 10135 Torino, Italy
| |
Collapse
|
3
|
Shen Y, Deng K, Li L. Spiro-OMeTAD-Based Hole Transport Layer Engineering toward Stable Perovskite Solar Cells. SMALL METHODS 2022; 6:e2200757. [PMID: 36202752 DOI: 10.1002/smtd.202200757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 09/20/2022] [Indexed: 06/16/2023]
Abstract
Perovskite solar cells (PSCs) have undergone unprecedented growth in the past decade as an emerging photovoltaic technology. Up till now, the power conversion efficiency of PSCs has exceeded 25% that rivals silicon solar cells and there is still room for further enhancement. However, the development in long-term stability lags far behind, which remains a great concern for the commercial application in the future. The device instability mainly arises from the functional components, including perovskite film, charge transport layers, and electrodes along with the involved interfaces. As the most widely studied hole transport layer at the current stage, 2,2',7,7'-tetrakis(N,N-di(4-methoxyphenyl)amino)-9,9-spirobifluorene (Spiro-OMeTAD) helps contribute to the achievement of record efficiency but it weakens the device stability due to the doping-induced side effects such as hygroscopicity and ion migration. Great efforts are devoted to boosting the stability of Spiro-OMeTAD while maintaining excellent photovoltaic performance. In this review, the fundamental properties of Spiro-OMeTAD have been summarized and the recent advances in engineering Spiro-OMeTAD-based hole transport layer for the sake of highly efficient PSCs with enhanced longevity are highlighted. In the end, an outlook for the further optimization of Spiro-OMeTAD is provided and the issues related to large-scale production are discussed.
Collapse
Affiliation(s)
- Ying Shen
- School of Physical Science and Technology, Jiangsu Key Laboratory of Thin Films, Center for Energy Conversion Materials & Physics, Soochow University, Suzhou, 215006, China
| | - Kaimo Deng
- School of Physical Science and Technology, Jiangsu Key Laboratory of Thin Films, Center for Energy Conversion Materials & Physics, Soochow University, Suzhou, 215006, China
| | - Liang Li
- School of Physical Science and Technology, Jiangsu Key Laboratory of Thin Films, Center for Energy Conversion Materials & Physics, Soochow University, Suzhou, 215006, China
| |
Collapse
|
4
|
Wu G, Liang R, Ge M, Sun G, Zhang Y, Xing G. Surface Passivation Using 2D Perovskites toward Efficient and Stable Perovskite Solar Cells. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2105635. [PMID: 34865245 DOI: 10.1002/adma.202105635] [Citation(s) in RCA: 62] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 12/03/2021] [Indexed: 06/13/2023]
Abstract
3D perovskite solar cells (PSCs) have shown great promise for use in next-generation photovoltaic devices. However, some challenges need to be addressed before their commercial production, such as enormous defects formed on the surface, which result in severe SRH recombination, and inadequate material interplay between the composition, leading to thermal-, moisture-, and light-induced degradation. 2D perovskites, in which the organic layer functions as a protective barrier to block the erosion of moisture or ions, have recently emerged and attracted increasing attention because they exhibit significant robustness. Inspired by this, surface passivation by employing 2D perovskites deposited on the top of 3D counterparts has triggered a new wave of research to simultaneously achieve higher efficiency and stability. Herein, we exploited a vast amount of literature to comprehensively summarize the recent progress on 2D/3D heterostructure PSCs using surface passivation. The review begins with an introduction of the crystal structure, followed by the advantages of the combination of 2D and 3D perovskites. Then, the surface passivation strategies, optoelectronic properties, enhanced stability, and photovoltaic performance of 2D/3D PSCs are systematically discussed. Finally, the perspectives of passivation techniques using 2D perovskites to offer insight into further improved photovoltaic performance in the future are proposed.
Collapse
Affiliation(s)
- Guangbao Wu
- Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau, 999078, China
| | - Rui Liang
- Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau, 999078, China
| | - Mingzheng Ge
- Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau, 999078, China
- School of Textile and Clothing, Nantong University, Nantong, 226019, P. R. China
| | - Guoxing Sun
- Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau, 999078, China
| | - Yuan Zhang
- School of Chemistry, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, 100191, China
| | - Guichuan Xing
- Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau, 999078, China
| |
Collapse
|
5
|
Wu K, Wu Y, Fu P, Yang D, Ruan B, Wu M, Wu R. Composites of Vanadium (III) Oxide (V 2O 3) Incorporating with Amorphous C as Pt-Free Counter Electrodes for Low-Cost and High-Performance Dye-Sensitized Solar Cells. ACS OMEGA 2021; 6:11183-11191. [PMID: 34056273 PMCID: PMC8153909 DOI: 10.1021/acsomega.0c05880] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Accepted: 04/08/2021] [Indexed: 06/12/2023]
Abstract
To replace precious Pt-based counter electrodes (CEs) with a low-cost Pt-free catalyst of CEs is still a motivating hotspot to decrease the fabrication cost of dye-sensitized solar cells (DSSCs). Herein, four different V2O3@C composite catalysts were synthesized by pyrolysis of a precursor under N2 flow at 1100 °C and further served as catalytic materials of CEs for the encapsulation of DSSCs. The precursors of V2O3@C composites have been prepared via a sol-gel method using different proportions of V2O5 with soluble starch in a H2O2 solution. Power conversion efficiencies (PCEs) of 3.59, 4.79, 5.15, and 5.06% were obtained from different V2O3@C composites, with soluble starch-to-V2O5 mass ratios (S/V) of 1:2, 1:1, 2:1, and 4:1, respectively, as CEs to reduce iodide/triiodide in DSSCs. The improvement of electrode performance is due to the combined effects on the increased specific surface area and the enhanced conductivity of V2O3@C composite catalysts.
Collapse
Affiliation(s)
- Kezhong Wu
- Hebei Key Laboratory of Inorganic
Nanomaterials, College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang 050024, China
| | - Yingshan Wu
- Hebei Key Laboratory of Inorganic
Nanomaterials, College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang 050024, China
| | - Pengyuan Fu
- Hebei Key Laboratory of Inorganic
Nanomaterials, College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang 050024, China
| | - Dandan Yang
- Hebei Key Laboratory of Inorganic
Nanomaterials, College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang 050024, China
| | - Bei Ruan
- Hebei Key Laboratory of Inorganic
Nanomaterials, College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang 050024, China
| | - Mingxing Wu
- Hebei Key Laboratory of Inorganic
Nanomaterials, College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang 050024, China
| | - Ruitao Wu
- Hebei Key Laboratory of Inorganic
Nanomaterials, College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang 050024, China
| |
Collapse
|
6
|
Zhang C, He Z, Luo X, Meng R, Chen M, Lu H, Yang Y. Effects of CsSn xPb 1-xI 3 Quantum Dots as Interfacial Layer on Photovoltaic Performance of Carbon-Based Perovskite Solar Cells. NANOSCALE RESEARCH LETTERS 2021; 16:74. [PMID: 33928451 PMCID: PMC8085196 DOI: 10.1186/s11671-021-03533-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 04/19/2021] [Indexed: 05/30/2023]
Abstract
In this work, inorganic tin-doped perovskite quantum dots (PQDs) are incorporated into carbon-based perovskite solar cells (PSCs) to improve their photovoltaic performance. On the one hand, by controlling the content of Sn2+ doping, the energy level of the tin-doped PQDs can be adjusted, to realize optimized band alignment and enhanced separation of photogenerated electron-hole pairs. On the other hand, the incorporation of tin-doped PQDs provided with a relatively high acceptor concentration due to the self-p-type doping effect is able to reduce the width of the depletion region near the back surface of the perovskite, thereby enhancing the hole extraction. Particularly, after the addition of CsSn0.2Pb0.8I3 quantum dots (QDs), improvement of the power conversion efficiency (PCE) from 12.80 to 14.22% can be obtained, in comparison with the pristine device. Moreover, the experimental results are analyzed through the simulation of the one-dimensional perovskite/tin-doped PQDs heterojunction.
Collapse
Affiliation(s)
- Chi Zhang
- Department of Physics, School of Science, Wuhan University of Technology, Wuhan, 430070, People's Republic of China
| | - Zhiyuan He
- Department of Physics, School of Science, Wuhan University of Technology, Wuhan, 430070, People's Republic of China
| | - Xuanhui Luo
- Department of Physics, School of Science, Wuhan University of Technology, Wuhan, 430070, People's Republic of China
| | - Rangwei Meng
- Department of Physics, School of Science, Wuhan University of Technology, Wuhan, 430070, People's Republic of China
| | - Mengwei Chen
- Department of Physics, School of Science, Wuhan University of Technology, Wuhan, 430070, People's Republic of China
| | - Haifei Lu
- Department of Physics, School of Science, Wuhan University of Technology, Wuhan, 430070, People's Republic of China
| | - Yingping Yang
- Department of Physics, School of Science, Wuhan University of Technology, Wuhan, 430070, People's Republic of China.
| |
Collapse
|
7
|
Tomar AK, Joshi A, Singh G, Sharma RK. Perovskite oxides as supercapacitive electrode: Properties, design and recent advances. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2020.213680] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
|
8
|
Niu H, Fang C, Wei X, Wang H, Wan L, Li Y, Mao X, Xu J, Zhou R. Magnetron sputtered ZnO electron transporting layers for high performance perovskite solar cells. Dalton Trans 2021; 50:6477-6487. [PMID: 34002752 DOI: 10.1039/d1dt00344e] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An ideal electron transporting layer (ETL) of perovskite solar cells (PSCs) requires reasonable energy levels, high electrical conductivity and excellent charge extraction. The low processing temperature makes ZnO a promising ETL for PSCs; however the widely used solution-processed ZnO films often suffer from high-density surface defect states, which might cause severe charge recombinations at the ETL/perovskite interface and accelerate the chemical decomposition of perovskite materials. In this work, we employed the vacuum-based magnetron sputtering method to deposit ZnO ETLs, which significantly reduces the number of oxygen vacancies and hydroxyl groups on the ZnO surface. The magnetron sputtered ZnO based CH3NH3PbI3 PSCs yield a considerable power conversion efficiency (PCE) of 13.04% with excellent long-term device stability. Furthermore, aiming to improve the ETL/perovskite interface for more efficient electron extraction, a bilayer ZnO/SnO2 ETL was designed for constructing high-efficiency PSCs. The detailed morphology characterization confirms that the bilayer ZnO/SnO2 provides a low-roughness film surface for the deposition of high-quality perovskite films with full coverage and long-range continuity. The carrier dynamic study reveals that the presence of the SnO2 layer results in the formation of favorable cascade energy alignments and facilitates the electron extraction at the ETL/perovskite interface. As a result, compared with the ZnO-based PSCs, the device constructed with the bilayer ZnO/SnO2 ETL delivers an improved PCE of 15.82%, coupled with a reduced hysteresis.
Collapse
Affiliation(s)
- Haihong Niu
- School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, P. R. China.
| | - Cunlong Fang
- School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, P. R. China.
| | - Xiantao Wei
- School of Physical Sciences, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Huan Wang
- School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, P. R. China.
| | - Lei Wan
- School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, P. R. China.
| | - Yuan Li
- School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei 230009, P. R. China
| | - Xiaoli Mao
- School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei 230009, P. R. China
| | - Jinzhang Xu
- School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, P. R. China.
| | - Ru Zhou
- School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, P. R. China.
| |
Collapse
|
9
|
Zhang Y, Wei L, Liu X, Ma W, Wang J, Fan S. N/O co-enriched graphene hydrogels as high-performance electrodes for aqueous symmetric supercapacitors. RSC Adv 2021; 11:19737-19746. [PMID: 35479205 PMCID: PMC9033685 DOI: 10.1039/d1ra01863a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 06/22/2021] [Accepted: 05/23/2021] [Indexed: 11/21/2022] Open
Abstract
N/O co-enriched graphene hydrogel based supercapacitors were assembled. Owing to the synergistic effect between the heteroatoms (N, O), 3D porous structures and high specific surface area, they present excellent electrochemical properties.
Collapse
Affiliation(s)
- Yong Zhang
- College of Materials Science and Engineering
- Graphene Functional Materials Research Laboratory
- Qiqihar University
- Qiqihar 161006
- P. R. China
| | - Liang Wei
- College of Materials Science and Engineering
- Graphene Functional Materials Research Laboratory
- Qiqihar University
- Qiqihar 161006
- P. R. China
| | - Xijun Liu
- College of Materials Science and Engineering
- Graphene Functional Materials Research Laboratory
- Qiqihar University
- Qiqihar 161006
- P. R. China
| | - Wenhui Ma
- School of Chemistry and Chemical Engineering
- Qiqihar University
- Qiqihar 161006
- P. R. China
| | - Jiankai Wang
- School of Chemistry and Chemical Engineering
- Qiqihar University
- Qiqihar 161006
- P. R. China
| | - Shan Fan
- College of Materials Science and Engineering
- Graphene Functional Materials Research Laboratory
- Qiqihar University
- Qiqihar 161006
- P. R. China
| |
Collapse
|
10
|
Ma R, Ren Z, Li C, Wang Y, Huang Z, Zhao Y, Yang T, Liang Y, Sun XW, Choy WCH. Establishing Multifunctional Interface Layer of Perovskite Ligand Modified Lead Sulfide Quantum Dots for Improving the Performance and Stability of Perovskite Solar Cells. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2002628. [PMID: 32964688 DOI: 10.1002/smll.202002628] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 07/24/2020] [Indexed: 06/11/2023]
Abstract
While organic-inorganic halide perovskite solar cells (PSCs) show great potential for realizing low-cost and easily fabricated photovoltaics, the unexpected defects and long-term stability against moisture are the main issues hindering their practical applications. Herein, a strategy is demonstrated to address the main issues by introducing lead sulfide quantum dots (QDs) on the perovskite surface as the multifunctional interface layer on perovskite film through establishing perovskite as the ligand on PbS QDs. Meanwhile, the multifunctions are featured in three aspects including the strong interactions of PbS QDs with perovskites particularly at the grain boundaries favoring good QDs coverage on perovskites for ultimate smooth morphology; an inhibition of iodide ions mobilization by the strong interaction between iodide and the incorporated QDs; and the reduction of the dangling bonds of Pb2+ by the sulfur atoms of PbS QDs. Finally, the device performances are highly improved due to the reduced defects and non-radiative recombination. The results show that both open-circuit voltage and fill factor are significantly improved to the high values of 1.13 V and 80%, respectively in CH3 NH3 PbI3 -based PSCs, offering a high efficiency of 20.64%. The QDs incorporation also enhances PSCs' stability benefitting from the induced hydrophobic surface and suppressed iodide mobilization.
Collapse
Affiliation(s)
- Ruiman Ma
- Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, 999077, China
| | - Zhenwei Ren
- Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, 999077, China
| | - Can Li
- Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, 999077, China
| | - Yong Wang
- Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, 999077, China
| | - Zhanfeng Huang
- Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, 999077, China
| | - Yong Zhao
- Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, 999077, China
| | - Tingbin Yang
- Shenzhen Key Laboratory of Printed Electronics, Department of Materials Science and Engineering, Southern University of Science and Technology of China, Shenzhen, 518055, P. R. China
| | - Yongye Liang
- Shenzhen Key Laboratory of Printed Electronics, Department of Materials Science and Engineering, Southern University of Science and Technology of China, Shenzhen, 518055, P. R. China
| | - Xiao Wei Sun
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, 518055, P. R. China
| | - Wallace C H Choy
- Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, 999077, China
| |
Collapse
|
11
|
Fraccarollo A, Zoccante A, Marchese L, Cossi M. Ab initio modeling of 2D and quasi-2D lead organohalide perovskites with divalent organic cations and a tunable band gap. Phys Chem Chem Phys 2020; 22:20573-20587. [PMID: 32893270 DOI: 10.1039/c9cp06851a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
We describe theoretically the structure and properties of layered lead organohalide perovskites, considering purely bi-dimensional (2D) PbI4 layers, and quasi-2D systems where the inorganic layers are formed by more than one lead iodide sheet. The intercalating organic dications were designed to have low lying virtual orbitals (LUMO), so as to induce in the perovskite the appearance of virtual bands, localized in the organic layer, either close to the inorganic conduction band bottom or valence band top, or in some cases in the middle of the inorganic band gap. Such a feature is quite uncommon for this class of materials, and deserves attention since it allows one to tune the effective band gap of the material, possibly leading to the absorption of visible light and influencing the optical properties deeply. We discuss the effect of functional groups on the organic cations, and of the different symmetries used in geometry optimizations: a careful analysis of the contributions to the dispersion curves and band gaps was performed. The charge carrier mobility is also discussed, computing the conductivity over relaxation time and the effective masses for all the systems, with particular attention to the features related to the unusual organic intra-gap bands. All the structures were optimized at the DFT level, with inclusion of dispersion effects; dispersion curves were computed with full relativistic potentials, and the band gaps corrected for long range coulombic effects at the GW level. A semiempirical approach, based on the integration of charge carrier group velocities over a dense grid of k-points, was used to compute the conductivities and effective masses.
Collapse
Affiliation(s)
- Alberto Fraccarollo
- Dipartimento di Scienze e Innovazione Tecnologica (DISIT), Università del Piemonte Orientale, via T. Michel 11, I-15121, Alessandria, Italy.
| | | | | | | |
Collapse
|
12
|
Liu B, Li J, Duan G, Ji M, Lu Y, Yan T, Cao B, Liu Z. Study on organic-inorganic hybrid perovskite nanocrystals with regular morphologies and their effect on photoluminescence properties. OPTICS EXPRESS 2020; 28:10714-10724. [PMID: 32403596 DOI: 10.1364/oe.378203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Accepted: 03/17/2020] [Indexed: 06/11/2023]
Abstract
Organic-inorganic hybrid perovskite nanocrystals have been widely studied for their excellent photoelectric properties. However, the irregular morphologies of organic-inorganic hybrid perovskite nanocrystals have limited application in the field of lighting and display. From this, the regular morphologies of nanospheres, nanorods, nanoplatelets and MAPbBr3 (MA = CH3NH3 +) nanocrystals have been synthesized by regulating the type and proportion of auxiliary ligands. The phase evolution, morphology and fluorescent properties were systematically studied by the various instruments of XRD, TEM, PL/UV-vis spectroscopy and fluorescence decay analysis. With the morphologies changing from nanospheres to nanoplatelets, the emission peaks of MAPbBr3 nanocrystals red-shifted, and the lifetimes have increased gradually. The underlying mechanisms were thoroughly investigated and elucidated. On this basis, the role of acid and amine in the synthesis of MAPbBr3 nanocrystals was systematically studied by regulating the ratio of oleic acid and N-octylamine. The fluorescence kinetics of MAPbBr3 nanocrystals were studied by femtosecond transient absorption spectroscopy, and the charge carrier relaxation mechanism was clarified. Furthermore, the effect of temperature on the fluorescence properties of the nanocrystal was investigated in detail. Organic-inorganic hybrid perovskite nanocrystals with morphologies-controlled and excellent fluorescence properties are expected to be widely used in lighting and display fields.
Collapse
|
13
|
Zhang Y, Wen G, Fan S, Ma W, Li S, Wu T, Yu Z, Zhao B. Alcoholic hydroxyl functionalized partially reduced graphene oxides for symmetric supercapacitors with long-term cycle stability. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.05.021] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
|
14
|
Fu B, Deng C, Yang L. Efficiency Enhancement of Solid-State CuInS 2 Quantum Dot-Sensitized Solar Cells by Improving the Charge Recombination. NANOSCALE RESEARCH LETTERS 2019; 14:198. [PMID: 31172299 PMCID: PMC6554371 DOI: 10.1186/s11671-019-2998-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 04/30/2019] [Indexed: 06/09/2023]
Abstract
Copper indium sulfide quantum dots (CuInS2 QDs) were incorporated into a nanocrystalline TiO2 film by using spin coating-assisted successive ionic layer adsorption and reaction process to fabricate CuInS2 QD-sensitized TiO2 photoelectrodes for the solid-state quantum dot-sensitized solar cell (QDSSC) applications. The result shows that the photovoltaic performance of solar cell is extremely dependent on the number of cycles, which has an appreciable impact on the coverage ratio of CuInS2 on the surface of TiO2 and the density of surface defect states. In the following high-temperature annealing process, it is found that annealing TiO2/CuInS2 photoelectrode at a suitable temperature would be beneficial for decreasing the charge recombination and accelerating the charge transport. After annealing at 400 °C, a significantly enhanced photovoltaic properties of solid-state CuInS2 QDSSCs are obtained, achieving the power conversion efficiency (PCE) of 3.13%, along with an open-circuit voltage (VOC) of 0.68 V, a short-circuit photocurrent density (JSC) of 11.33 mA cm-2, and a fill factor (FF) of 0.41. The enhancement in the performance of solar cells is mainly ascribed to the suppression of charge recombination and the promotion of the electron transfer after annealing.
Collapse
Affiliation(s)
- Bowen Fu
- College of Physics Science and Technology, Hebei University, Baoding, 071002 China
| | - Chong Deng
- College of Physics Science and Technology, Hebei University, Baoding, 071002 China
- Key Laboratory of Semiconductor Photovoltaic Technology of Inner Mongolia Autonomous Region, School of Physical Science and Technology, Inner Mongolia University, Hohhot, 010021 China
| | - Lin Yang
- College of Physics Science and Technology, Hebei University, Baoding, 071002 China
| |
Collapse
|
15
|
Zhou R, Huang Y, Zhou J, Niu H, Wan L, Li Y, Xu J, Xu J. Copper selenide (Cu 3Se 2 and Cu 2-xSe) thin films: electrochemical deposition and electrocatalytic application in quantum dot-sensitized solar cells. Dalton Trans 2018; 47:16587-16595. [PMID: 30417916 DOI: 10.1039/c8dt03791d] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work, high crystallinity copper selenide thin films directly deposited onto conducting substrates were obtained through a potentiostatic electrodeposition approach. The as-deposited copper selenides involve annealing induced phase transformation from tetragonal Cu3Se2 to cubic Cu2-xSe. The annealing also leads to a remarkable morphology change from dendritic nanosheets to connected networks and separated particle shapes for the annealed (A-Cu2-xSe) and selenized (S-Cu2-xSe) samples, respectively. The copper selenide thin films were demonstrated to serve as efficient counter electrodes (CEs) in quantum dot-sensitized solar cells (QDSCs) for electrocatalyzing polysulfide electrolyte regeneration. The CdS/CdSe QDSCs constructed with copper selenide CEs deliver considerable power conversion efficiencies (PCEs), especially an optimal value of 3.89% for the A-Cu2-xSe CE-based device. The enhanced photovoltaic performance benefits from the connected network microstructure of A-Cu2-xSe films which afford a large number of reaction sites and efficient charge transport pathways. The Tafel polarization characterization further indicates that, in contrast to the commonly used Cu2S and Pt CEs, the non-stoichiometric Cu2-xSe CE exhibits better electrochemical catalytic activity. This work highlights the great potential of electrodeposition for fabricating promising copper selenide CEs for high performance QDSCs.
Collapse
Affiliation(s)
- Ru Zhou
- School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, P. R. China.
| | | | | | | | | | | | | | | |
Collapse
|
16
|
Dou Y, Zhou R, Wan L, Niu H, Zhou J, Xu J, Cao G. Nearly monodisperse PbS quantum dots for highly efficient solar cells: anin situseeded ion exchange approach. Chem Commun (Camb) 2018; 54:12598-12601. [DOI: 10.1039/c8cc07496h] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A facilein situseeded ion-exchange is explored to produce nearly monodisperse Pbs QDs sensitized mesoporous TiO2for highly efficient photovoltaics.
Collapse
Affiliation(s)
- Yan Dou
- School of Electrical Engineering and Automation
- Hefei University of Technology
- Hefei 230009
- P. R. China
| | - Ru Zhou
- School of Electrical Engineering and Automation
- Hefei University of Technology
- Hefei 230009
- P. R. China
| | - Lei Wan
- School of Electrical Engineering and Automation
- Hefei University of Technology
- Hefei 230009
- P. R. China
| | - Haihong Niu
- School of Electrical Engineering and Automation
- Hefei University of Technology
- Hefei 230009
- P. R. China
| | - Juntian Zhou
- School of Electrical Engineering and Automation
- Hefei University of Technology
- Hefei 230009
- P. R. China
| | - Jinzhang Xu
- School of Electrical Engineering and Automation
- Hefei University of Technology
- Hefei 230009
- P. R. China
| | - Guozhong Cao
- Department of Materials Science and Engineering
- University of Washington
- Seattle
- USA
| |
Collapse
|