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Li G, Hu Y, Li M, Tang Y, Zhang Z, Musiienko A, Cao Q, Akhundova F, Li J, Prashanthan K, Yang F, Janasik P, Appiah ANS, Trofimov S, Livakas N, Zuo S, Wu L, Wang L, Yang Y, Agyei-Tuffour B, MacQueen RW, Naydenov B, Unold T, Unger E, Aktas E, Eigler S, Abate A. Managing Excess Lead Iodide with Functionalized Oxo-Graphene Nanosheets for Stable Perovskite Solar Cells. Angew Chem Int Ed Engl 2023; 62:e202307395. [PMID: 37522562 DOI: 10.1002/anie.202307395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 07/27/2023] [Accepted: 07/28/2023] [Indexed: 08/01/2023]
Abstract
Stability issues could prevent lead halide perovskite solar cells (PSCs) from commercialization despite it having a comparable power conversion efficiency (PCE) to silicon solar cells. Overcoming drawbacks affecting their long-term stability is gaining incremental importance. Excess lead iodide (PbI2 ) causes perovskite degradation, although it aids in crystal growth and defect passivation. Herein, we synthesized functionalized oxo-graphene nanosheets (Dec-oxoG NSs) to effectively manage the excess PbI2 . Dec-oxoG NSs provide anchoring sites to bind the excess PbI2 and passivate perovskite grain boundaries, thereby reducing charge recombination loss and significantly boosting the extraction of free electrons. The inclusion of Dec-oxoG NSs leads to a PCE of 23.7 % in inverted (p-i-n) PSCs. The devices retain 93.8 % of their initial efficiency after 1,000 hours of tracking at maximum power points under continuous one-sun illumination and exhibit high stability under thermal and ambient conditions.
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Affiliation(s)
- Guixiang 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, Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng, 475004, China
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109, Berlin, Germany
- Department of Chemistry, Bielefeld University, Universitätsstraße 25, 33615, Bielefeld, Germany
- Present address: Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Yalei Hu
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Altensteinstraße 23a, 14195, Berlin, Germany
- CNRS, Immunology, Immunopathology and Therapeutic Chemistry, UPR3572, University of Strasbourg, ISIS, 67000, Strasbourg, France
| | - 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, Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng, 475004, China
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109, Berlin, Germany
| | - Ying Tang
- 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, Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng, 475004, China
| | - Zuhong Zhang
- 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, Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng, 475004, China
| | - Artem Musiienko
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109, Berlin, Germany
| | - Qing Cao
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Altensteinstraße 23a, 14195, Berlin, Germany
| | - Fatima Akhundova
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109, Berlin, Germany
| | - Jinzhao Li
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109, Berlin, Germany
| | - Karunanantharajah Prashanthan
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109, Berlin, Germany
- Department of Physics, University of Jaffna, Jaffna, 40000, Sri Lanka
| | - Fengjiu Yang
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109, Berlin, Germany
| | - Patryk Janasik
- Silesian University of Technology, 44-100, Gliwice, Poland
| | | | - Sergei Trofimov
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109, Berlin, Germany
| | - Nikolaos Livakas
- Nanochemistry Department, Istituto Italiano di Tecnologia, Via Morego 30, 16163, Genova, Italy
- Department of Chemistry and Industrial Chemistry, Universitàdegli Studi di Genova, Via Dodecaneso 31, 16146, Genova, Italy
| | - Shengnan Zuo
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109, Berlin, Germany
| | - Luyan Wu
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109, Berlin, Germany
- Department of Physics, Università di Cagliari Cittadella Universitaria, 09042, Monserrato, Italy
| | - Luyao Wang
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109, Berlin, Germany
| | - Yuqian Yang
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109, Berlin, Germany
| | - Benjamin Agyei-Tuffour
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109, Berlin, Germany
- Department of Materials Science and Engineering, School of Engineering Sciences, College of Basic and Applied Sciences, University of Ghana Legon, GA-521-1966, Accra, Ghana
| | - Rowan W MacQueen
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109, Berlin, Germany
| | - Boris Naydenov
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109, Berlin, Germany
| | - Thomas Unold
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109, Berlin, Germany
| | - Eva Unger
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109, Berlin, Germany
| | - Ece Aktas
- Department of Chemical, Materials and Production Engineering, University of Naples Federico II. Naples, pzz.le Vincenzo Tecchio 80, 80125, Naples, Italy
| | - Siegfried Eigler
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Altensteinstraße 23a, 14195, Berlin, Germany
| | - Antonio Abate
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109, Berlin, Germany
- Department of Chemistry, Bielefeld University, Universitätsstraße 25, 33615, Bielefeld, Germany
- Department of Chemical, Materials and Production Engineering, University of Naples Federico II. Naples, pzz.le Vincenzo Tecchio 80, 80125, Naples, Italy
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Livakas N, Toso S, Ivanov YP, Das T, Chakraborty S, Divitini G, Manna L. CsPbCl 3 → CsPbI 3 Exchange in Perovskite Nanocrystals Proceeds through a Jump-the-Gap Reaction Mechanism. J Am Chem Soc 2023; 145:20442-20450. [PMID: 37691231 PMCID: PMC10515632 DOI: 10.1021/jacs.3c06214] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Indexed: 09/12/2023]
Abstract
Halide exchange is a popular strategy to tune the properties of CsPbX3 nanocrystals after synthesis. However, while Cl → Br and Br → I exchanges proceed through the formation of stable mixed-halide nanocrystals, the Cl ⇌ I exchange is more elusive. Indeed, the large size difference between chloride and iodide ions causes a miscibility gap in the CsPbCl3-CsPbI3 system, preventing the isolation of stable CsPb(ClxI1-x)3 nanocrystals. Yet, previous works have claimed that a full CsPbCl3 → CsPbI3 exchange can be achieved. Even more interestingly, interrupting the exchange prematurely yields a mixture of CsPbCl3 and CsPbI3 nanocrystals that coexist without undergoing further transformation. Here, we investigate the reaction mechanism of CsPbCl3 → CsPbI3 exchange in nanocrystals. We show that the reaction proceeds through the early formation of iodide-doped CsPbCl3 nanocrystals covered by a monolayer shell of CsI. These nanocrystals then leap over the miscibility gap between CsPbCl3 and CsPbI3 by briefly transitioning to short-lived and nonrecoverable CsPb(ClxI1-x)3 nanocrystals, which quickly expel the excess chloride and turn into the chloride-doped CsPbI3 nanocrystals found in the final product.
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Affiliation(s)
- Nikolaos Livakas
- Nanochemistry, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
- Dipartimento
di Chimica e Chimica Industriale, Università
di Genova, 16146 Genova, Italy
| | - Stefano Toso
- Nanochemistry, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Yurii P. Ivanov
- Electron
Spectroscopy and Nanoscopy, Istituto Italiano
di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Tisita Das
- Materials
Theory for Energy Scavenging (MATES) Lab, Department of Physics, Harish-Chandra Research Institute (HRI), A CI of Homi
Bhabha National Institute (HBNI), Chhatnag Road, Jhunsi, Prayagraj 211019, India
| | - Sudip Chakraborty
- Materials
Theory for Energy Scavenging (MATES) Lab, Department of Physics, Harish-Chandra Research Institute (HRI), A CI of Homi
Bhabha National Institute (HBNI), Chhatnag Road, Jhunsi, Prayagraj 211019, India
| | - Giorgio Divitini
- Electron
Spectroscopy and Nanoscopy, Istituto Italiano
di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Liberato Manna
- Nanochemistry, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
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Kostopoulou A, Brintakis K, Sygletou M, Savva K, Livakas N, Pantelaiou MA, Dang Z, Lappas A, Manna L, Stratakis E. Laser-Induced Morphological and Structural Changes of Cesium Lead Bromide Nanocrystals. Nanomaterials 2022; 12:nano12040703. [PMID: 35215031 PMCID: PMC8879588 DOI: 10.3390/nano12040703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 02/15/2022] [Accepted: 02/17/2022] [Indexed: 02/01/2023]
Abstract
Metal halide perovskite nanocrystals, an emerging class of materials for advanced photonic and optoelectronic applications, are mainly fabricated with colloidal chemistry routes. On the quest for new properties according to application needs, new perovskite systems of various morphologies and levels of doping and alloying have been developed, often also involving post-synthesis reactions. Recently, laser irradiation in liquids has been utilized as a fast method to synthesize or transform materials and interesting laser-induced transformations on nanocrystals were induced. These studies in general have been limited to small nanocrystals (~15 nm). In the case of halide perovskites, fragmentation or anion exchange have been observed in such laser-based processes, but no crystal structure transformations were actually observed or deliberately studied. Nanocrystals are more sensitive to light exposure compared to the corresponding bulk crystals. Additional factors, such as size, morphology, the presence of impurities, and others, can intricately affect the photon absorption and heat dissipation in nanocrystal suspensions during laser irradiation. All these factors can play an important role in the final morphologies and in the time required for these transformations to unfold. In the present work, we have employed a 513 nm femtosecond (fs) laser to induce different transformations in large nanocrystals, in which two phases coexist in the same particle (Cs4PbBr6/CsPbBr3 nanohexagons of ~100 nm), dispersed in dichlorobenzene. These transformations include: (i) the exfoliation of the primary nanohexagons and partial anion exchange; (ii) fragmentation in smaller nanocubes and partial anion exchange; (iii) side-by-side-oriented attachment, fusion, and formation of nanoplatelets and complete anion exchange; (iv) side-by-side attachment, fusion, and formation of nanosheets. Partial or complete Br-Cl anion exchange in the above transformations was triggered by the partial degradation of dichlorobenzene. In addition to the detailed analysis of the various nanocrystal morphologies observed in the various transformations, the structure–photoluminescence relationships for the different samples were analyzed and discussed.
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Affiliation(s)
- Athanasia Kostopoulou
- Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, 71110 Heraklion, Greece; (M.S.); (K.S.); (N.L.); (M.A.P.); (A.L.)
- Correspondence: (A.K.); (K.B.); (E.S.); Tel.: +30-2810-391874 (A.K.); +30-2810-391874 (K.B.); +30-2810-391274 (E.S.)
| | - Konstantinos Brintakis
- Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, 71110 Heraklion, Greece; (M.S.); (K.S.); (N.L.); (M.A.P.); (A.L.)
- Correspondence: (A.K.); (K.B.); (E.S.); Tel.: +30-2810-391874 (A.K.); +30-2810-391874 (K.B.); +30-2810-391274 (E.S.)
| | - Maria Sygletou
- Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, 71110 Heraklion, Greece; (M.S.); (K.S.); (N.L.); (M.A.P.); (A.L.)
| | - Kyriaki Savva
- Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, 71110 Heraklion, Greece; (M.S.); (K.S.); (N.L.); (M.A.P.); (A.L.)
| | - Nikolaos Livakas
- Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, 71110 Heraklion, Greece; (M.S.); (K.S.); (N.L.); (M.A.P.); (A.L.)
| | - Michaila Akathi Pantelaiou
- Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, 71110 Heraklion, Greece; (M.S.); (K.S.); (N.L.); (M.A.P.); (A.L.)
| | - Zhiya Dang
- Nanochemistry, Istituto Italiano di Tecnologia, 16163 Genova, Italy; (Z.D.); (L.M.)
| | - Alexandros Lappas
- Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, 71110 Heraklion, Greece; (M.S.); (K.S.); (N.L.); (M.A.P.); (A.L.)
| | - Liberato Manna
- Nanochemistry, Istituto Italiano di Tecnologia, 16163 Genova, Italy; (Z.D.); (L.M.)
| | - Emmanuel Stratakis
- Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, 71110 Heraklion, Greece; (M.S.); (K.S.); (N.L.); (M.A.P.); (A.L.)
- Department of Physics, University of Crete, 71003 Heraklion, Greece
- Correspondence: (A.K.); (K.B.); (E.S.); Tel.: +30-2810-391874 (A.K.); +30-2810-391874 (K.B.); +30-2810-391274 (E.S.)
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