Degradation analysis of perovskite solar cells doped with MABr3 via electrochemical impedance
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https://doi.org/10.1016/j.solener.2023.04.058 |
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Title
Degradation analysis of perovskite solar cells doped with MABr3 via electrochemical impedanceAuthor (s)
Date
2023Publisher
ElsevierISSN
0038-092X; 1471-1257Bibliographic citation
VALLE-PULIDO, Juan, et al. Degradation analysis of perovskite solar cells doped with MABr3 via electrochemical impedance. Solar Energy, 2023, vol. 258, p. 148-155Type
info:eu-repo/semantics/articlePublisher version
https://www.sciencedirect.com/science/article/pii/S0038092X23003031Version
info:eu-repo/semantics/publishedVersionSubject
Abstract
In this study, perovskite solar cells with a structure CsyFA1-xMAxCS0.05Pb(I1.05-xBrx)3, with X = 0 (no doping was added to the base structure CsFAPbI3) and X = 0.085 (CsFAPbI3 was doped with 8.5% MABr3) were prepared ... [+]
In this study, perovskite solar cells with a structure CsyFA1-xMAxCS0.05Pb(I1.05-xBrx)3, with X = 0 (no doping was added to the base structure CsFAPbI3) and X = 0.085 (CsFAPbI3 was doped with 8.5% MABr3) were prepared and were subjected to a 60 days ageing process (15 days under vacuum conditions followed by 45 days under room conditions) to study their stability. J-V curves showed that after the 60 days, the cells with no MABr3 only had 50.32% of the original efficiency remaining, while the samples with 8.5% MABr3 had 92.89% of the original efficiency, being the Jsc the main parameter that was affected during the ageing period. IPCE measurements suggest the formation of Cs segregates, that maintain or even increase the Jsc. According to electrochemical impedance studies, these segregates could be promoted by the lower ionic movement resistance in the 8.5% MABr3 samples, which may allow to re-arrange the atoms of the crystalline structure in a benefic way. This work is of great importance because it helps to understand how the doping affects the degradation processes, while showing how Impedance Spectroscopy can be used to characterize the changes in the electrical and ionic dynamics of the solar cells. [-]
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Solar Energy, 2023, vol. 258, p. 148-155Funder Name
Ministerio de Economía, Industria y Competitividad de España | Public Education Secretary of Mexico SEP | Universidad de Guadalajara | Consejo Nacional de Ciencia y Tecnología CONACYT
Project code
FJC2019-041835-I | UDG-PTC-1606 | 255437 | CVU 784532
Project title or grant
Programa para el Desarrollo Profesional Docente, apoyo a la incorporación de nuevos PTC | Programa de Fortalecimiento de Institutos, Centros y Laboratorios de Investigación
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© 2023 International Solar Energy Society. Published by Elsevier Ltd. All rights reserved.
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