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A Modified Sequential Deposition Route for High-Performance Carbon-Based Perovskite Solar Cells under Atmosphere Condition

Carbon-based hole transport material (HTM)-free perovskite solar cells have exhibited a promising commercialization prospect, attributed to their outstanding stability and low manufacturing cost. However, the serious charge recombination at the interface of the carbon counter electrode and titanium...

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Autores principales: Wu, Jinyu, Zhang, Lei, Kang, Qiao, Shi, Hongxi, Li, Long, Chi, Dan, Huang, Shihua, He, Gang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8781127/
https://www.ncbi.nlm.nih.gov/pubmed/35056796
http://dx.doi.org/10.3390/molecules27020481
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author Wu, Jinyu
Zhang, Lei
Kang, Qiao
Shi, Hongxi
Li, Long
Chi, Dan
Huang, Shihua
He, Gang
author_facet Wu, Jinyu
Zhang, Lei
Kang, Qiao
Shi, Hongxi
Li, Long
Chi, Dan
Huang, Shihua
He, Gang
author_sort Wu, Jinyu
collection PubMed
description Carbon-based hole transport material (HTM)-free perovskite solar cells have exhibited a promising commercialization prospect, attributed to their outstanding stability and low manufacturing cost. However, the serious charge recombination at the interface of the carbon counter electrode and titanium dioxide (TiO(2)) suppresses the improvement in the carbon-based perovskite solar cells’ performance. Here, we propose a modified sequential deposition process in air, which introduces a mixed solvent to improve the morphology of lead iodide (PbI(2)) film. Combined with ethanol treatment, the preferred crystallization orientation of the PbI(2) film is generated. This new deposition strategy can prepare a thick and compact methylammonium lead halide (MAPbI(3)) film under high-humidity conditions, which acts as a natural active layer that separates the carbon counter electrode and TiO(2). Meanwhile, the modified sequential deposition method provides a simple way to facilitate the conversion of the ultrathick PbI(2) capping layer to MAPbI(3), as the light absorption layer. By adjusting the thickness of the MAPbI(3) capping layer, we achieved a power conversation efficiency (PCE) of 12.5% for the carbon-based perovskite solar cells.
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spelling pubmed-87811272022-01-22 A Modified Sequential Deposition Route for High-Performance Carbon-Based Perovskite Solar Cells under Atmosphere Condition Wu, Jinyu Zhang, Lei Kang, Qiao Shi, Hongxi Li, Long Chi, Dan Huang, Shihua He, Gang Molecules Article Carbon-based hole transport material (HTM)-free perovskite solar cells have exhibited a promising commercialization prospect, attributed to their outstanding stability and low manufacturing cost. However, the serious charge recombination at the interface of the carbon counter electrode and titanium dioxide (TiO(2)) suppresses the improvement in the carbon-based perovskite solar cells’ performance. Here, we propose a modified sequential deposition process in air, which introduces a mixed solvent to improve the morphology of lead iodide (PbI(2)) film. Combined with ethanol treatment, the preferred crystallization orientation of the PbI(2) film is generated. This new deposition strategy can prepare a thick and compact methylammonium lead halide (MAPbI(3)) film under high-humidity conditions, which acts as a natural active layer that separates the carbon counter electrode and TiO(2). Meanwhile, the modified sequential deposition method provides a simple way to facilitate the conversion of the ultrathick PbI(2) capping layer to MAPbI(3), as the light absorption layer. By adjusting the thickness of the MAPbI(3) capping layer, we achieved a power conversation efficiency (PCE) of 12.5% for the carbon-based perovskite solar cells. MDPI 2022-01-13 /pmc/articles/PMC8781127/ /pubmed/35056796 http://dx.doi.org/10.3390/molecules27020481 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Wu, Jinyu
Zhang, Lei
Kang, Qiao
Shi, Hongxi
Li, Long
Chi, Dan
Huang, Shihua
He, Gang
A Modified Sequential Deposition Route for High-Performance Carbon-Based Perovskite Solar Cells under Atmosphere Condition
title A Modified Sequential Deposition Route for High-Performance Carbon-Based Perovskite Solar Cells under Atmosphere Condition
title_full A Modified Sequential Deposition Route for High-Performance Carbon-Based Perovskite Solar Cells under Atmosphere Condition
title_fullStr A Modified Sequential Deposition Route for High-Performance Carbon-Based Perovskite Solar Cells under Atmosphere Condition
title_full_unstemmed A Modified Sequential Deposition Route for High-Performance Carbon-Based Perovskite Solar Cells under Atmosphere Condition
title_short A Modified Sequential Deposition Route for High-Performance Carbon-Based Perovskite Solar Cells under Atmosphere Condition
title_sort modified sequential deposition route for high-performance carbon-based perovskite solar cells under atmosphere condition
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8781127/
https://www.ncbi.nlm.nih.gov/pubmed/35056796
http://dx.doi.org/10.3390/molecules27020481
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