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Ligand exchange engineering of FAPbI(3) perovskite quantum dots for solar cells

Formamidinium lead triiodide (FAPbI(3)) perovskite quantum dots (PQDs) show great advantages in photovoltaic applications due to their ideal bandgap energy, high stability and solution processability. The anti-solvent used for the post-treatment of FAPbI(3) PQD solid films significantly affects the...

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Autores principales: Fan, Wentao, Gao, Qiyuan, Mei, Xinyi, Jia, Donglin, Chen, Jingxuan, Qiu, Junming, Zhou, Qisen, Zhang, Xiaoliang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Higher Education Press 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9756204/
https://www.ncbi.nlm.nih.gov/pubmed/36637602
http://dx.doi.org/10.1007/s12200-022-00038-z
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author Fan, Wentao
Gao, Qiyuan
Mei, Xinyi
Jia, Donglin
Chen, Jingxuan
Qiu, Junming
Zhou, Qisen
Zhang, Xiaoliang
author_facet Fan, Wentao
Gao, Qiyuan
Mei, Xinyi
Jia, Donglin
Chen, Jingxuan
Qiu, Junming
Zhou, Qisen
Zhang, Xiaoliang
author_sort Fan, Wentao
collection PubMed
description Formamidinium lead triiodide (FAPbI(3)) perovskite quantum dots (PQDs) show great advantages in photovoltaic applications due to their ideal bandgap energy, high stability and solution processability. The anti-solvent used for the post-treatment of FAPbI(3) PQD solid films significantly affects the surface chemistry of the PQDs, and thus the vacancies caused by surface ligand removal inhibit the optoelectronic properties and stability of PQDs. Here, we study the effects of different anti-solvents with different polarities on FAPbI(3) PQDs and select a series of organic molecules for surface passivation of PQDs. The results show that methyl acetate could effectively remove surface ligands from the PQD surface without destroying its crystal structure during the post-treatment. The benzamidine hydrochloride (PhFACl) applied as short ligands of PQDs during the post-treatment could fill the A-site and X-site vacancies of PQDs and thus improve the electronic coupling of PQDs. Finally, the PhFACl-based PQD solar cell (PQDSC) achieves a power conversion efficiency of 6.4%, compared to that of 4.63% for the conventional PQDSC. This work provides a reference for insights into the surface passivation of PQDs and the improvement in device performance of PQDSCs. GRAPHICAL ABSTRACT: [Image: see text] SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s12200-022-00038-z.
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spelling pubmed-97562042023-01-06 Ligand exchange engineering of FAPbI(3) perovskite quantum dots for solar cells Fan, Wentao Gao, Qiyuan Mei, Xinyi Jia, Donglin Chen, Jingxuan Qiu, Junming Zhou, Qisen Zhang, Xiaoliang Front Optoelectron Research Article Formamidinium lead triiodide (FAPbI(3)) perovskite quantum dots (PQDs) show great advantages in photovoltaic applications due to their ideal bandgap energy, high stability and solution processability. The anti-solvent used for the post-treatment of FAPbI(3) PQD solid films significantly affects the surface chemistry of the PQDs, and thus the vacancies caused by surface ligand removal inhibit the optoelectronic properties and stability of PQDs. Here, we study the effects of different anti-solvents with different polarities on FAPbI(3) PQDs and select a series of organic molecules for surface passivation of PQDs. The results show that methyl acetate could effectively remove surface ligands from the PQD surface without destroying its crystal structure during the post-treatment. The benzamidine hydrochloride (PhFACl) applied as short ligands of PQDs during the post-treatment could fill the A-site and X-site vacancies of PQDs and thus improve the electronic coupling of PQDs. Finally, the PhFACl-based PQD solar cell (PQDSC) achieves a power conversion efficiency of 6.4%, compared to that of 4.63% for the conventional PQDSC. This work provides a reference for insights into the surface passivation of PQDs and the improvement in device performance of PQDSCs. GRAPHICAL ABSTRACT: [Image: see text] SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s12200-022-00038-z. Higher Education Press 2022-09-23 /pmc/articles/PMC9756204/ /pubmed/36637602 http://dx.doi.org/10.1007/s12200-022-00038-z Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Research Article
Fan, Wentao
Gao, Qiyuan
Mei, Xinyi
Jia, Donglin
Chen, Jingxuan
Qiu, Junming
Zhou, Qisen
Zhang, Xiaoliang
Ligand exchange engineering of FAPbI(3) perovskite quantum dots for solar cells
title Ligand exchange engineering of FAPbI(3) perovskite quantum dots for solar cells
title_full Ligand exchange engineering of FAPbI(3) perovskite quantum dots for solar cells
title_fullStr Ligand exchange engineering of FAPbI(3) perovskite quantum dots for solar cells
title_full_unstemmed Ligand exchange engineering of FAPbI(3) perovskite quantum dots for solar cells
title_short Ligand exchange engineering of FAPbI(3) perovskite quantum dots for solar cells
title_sort ligand exchange engineering of fapbi(3) perovskite quantum dots for solar cells
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9756204/
https://www.ncbi.nlm.nih.gov/pubmed/36637602
http://dx.doi.org/10.1007/s12200-022-00038-z
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