Relationship between ion migration and interfacial degradation of CH3NH3PbI3 perovskite solar cells under thermal conditions

Abstract Organic-inorganic hybrid perovskite solar cells (PSCs) have been extensively studied because of their outstanding performance: a power conversion efficiency exceeding 22% has been achieved. The most commonly used PSCs consist of CH3NH3PbI3 (MAPbI3) with a hole-selective contact, such as 2,2...

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Autores principales:	Seongtak Kim, Soohyun Bae, Sang-Won Lee, Kyungjin Cho, Kyung Dong Lee, Hyunho Kim, Sungeun Park, Guhan Kwon, Seh-Won Ahn, Heon-Min Lee, Yoonmook Kang, Hae-Seok Lee, Donghwan Kim
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/5b60e477990d4263923a37874cca81fb
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spelling	oai:doaj.org-article:5b60e477990d4263923a37874cca81fb2021-12-02T11:40:42ZRelationship between ion migration and interfacial degradation of CH3NH3PbI3 perovskite solar cells under thermal conditions10.1038/s41598-017-00866-62045-2322https://doaj.org/article/5b60e477990d4263923a37874cca81fb2017-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-00866-6https://doaj.org/toc/2045-2322Abstract Organic-inorganic hybrid perovskite solar cells (PSCs) have been extensively studied because of their outstanding performance: a power conversion efficiency exceeding 22% has been achieved. The most commonly used PSCs consist of CH3NH3PbI3 (MAPbI3) with a hole-selective contact, such as 2,2′,7,7′-tetrakis(N,N-di-p-methoxyphenylamine)-9,9-spiro-bifluorene (spiro-OMeTAD), for collecting holes. From the perspective of long-term operation of solar cells, the cell performance and constituent layers (MAPbI3, spiro-OMeTAD, etc.) may be influenced by external conditions like temperature, light, etc. Herein, we report the effects of temperature on spiro-OMeTAD and the interface between MAPbI3 and spiro-OMeTAD in a solar cell. It was confirmed that, at high temperatures (85 °C), I− and CH3NH3 + (MA+) diffused into the spiro-OMeTAD layer in the form of CH3NH3I (MAI). The diffused I− ions prevented oxidation of spiro-OMeTAD, thereby degrading the electrical properties of spiro-OMeTAD. Since ion diffusion can occur during outdoor operation, the structural design of PSCs must be considered to achieve long-term stability.Seongtak KimSoohyun BaeSang-Won LeeKyungjin ChoKyung Dong LeeHyunho KimSungeun ParkGuhan KwonSeh-Won AhnHeon-Min LeeYoonmook KangHae-Seok LeeDonghwan KimNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Seongtak Kim Soohyun Bae Sang-Won Lee Kyungjin Cho Kyung Dong Lee Hyunho Kim Sungeun Park Guhan Kwon Seh-Won Ahn Heon-Min Lee Yoonmook Kang Hae-Seok Lee Donghwan Kim Relationship between ion migration and interfacial degradation of CH3NH3PbI3 perovskite solar cells under thermal conditions
description	Abstract Organic-inorganic hybrid perovskite solar cells (PSCs) have been extensively studied because of their outstanding performance: a power conversion efficiency exceeding 22% has been achieved. The most commonly used PSCs consist of CH3NH3PbI3 (MAPbI3) with a hole-selective contact, such as 2,2′,7,7′-tetrakis(N,N-di-p-methoxyphenylamine)-9,9-spiro-bifluorene (spiro-OMeTAD), for collecting holes. From the perspective of long-term operation of solar cells, the cell performance and constituent layers (MAPbI3, spiro-OMeTAD, etc.) may be influenced by external conditions like temperature, light, etc. Herein, we report the effects of temperature on spiro-OMeTAD and the interface between MAPbI3 and spiro-OMeTAD in a solar cell. It was confirmed that, at high temperatures (85 °C), I− and CH3NH3 + (MA+) diffused into the spiro-OMeTAD layer in the form of CH3NH3I (MAI). The diffused I− ions prevented oxidation of spiro-OMeTAD, thereby degrading the electrical properties of spiro-OMeTAD. Since ion diffusion can occur during outdoor operation, the structural design of PSCs must be considered to achieve long-term stability.
format	article
author	Seongtak Kim Soohyun Bae Sang-Won Lee Kyungjin Cho Kyung Dong Lee Hyunho Kim Sungeun Park Guhan Kwon Seh-Won Ahn Heon-Min Lee Yoonmook Kang Hae-Seok Lee Donghwan Kim
author_facet	Seongtak Kim Soohyun Bae Sang-Won Lee Kyungjin Cho Kyung Dong Lee Hyunho Kim Sungeun Park Guhan Kwon Seh-Won Ahn Heon-Min Lee Yoonmook Kang Hae-Seok Lee Donghwan Kim
author_sort	Seongtak Kim
title	Relationship between ion migration and interfacial degradation of CH3NH3PbI3 perovskite solar cells under thermal conditions
title_short	Relationship between ion migration and interfacial degradation of CH3NH3PbI3 perovskite solar cells under thermal conditions
title_full	Relationship between ion migration and interfacial degradation of CH3NH3PbI3 perovskite solar cells under thermal conditions
title_fullStr	Relationship between ion migration and interfacial degradation of CH3NH3PbI3 perovskite solar cells under thermal conditions
title_full_unstemmed	Relationship between ion migration and interfacial degradation of CH3NH3PbI3 perovskite solar cells under thermal conditions
title_sort	relationship between ion migration and interfacial degradation of ch3nh3pbi3 perovskite solar cells under thermal conditions
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/5b60e477990d4263923a37874cca81fb
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Relationship between ion migration and interfacial degradation of CH3NH3PbI3 perovskite solar cells under thermal conditions

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