Electric-Field-Induced Degradation of Methylammonium Lead Iodide Perovskite Solar Cells

Soohyun Bae; Seongtak Kim; Sang Won Lee; Kyung Jin Cho; Sungeun Park; Seunghun Lee; Yoonmook Kang; Hae Seok Lee; Donghwan Kim

doi:10.1021/acs.jpclett.6b01176

Electric-Field-Induced Degradation of Methylammonium Lead Iodide Perovskite Solar Cells

Soohyun Bae, Seongtak Kim, Sang Won Lee, Kyung Jin Cho, Sungeun Park, Seunghun Lee, Yoonmook Kang, Hae Seok Lee, Donghwan Kim

Research output: Contribution to journal › Article › peer-review

140 Citations (Scopus)

Abstract

Perovskite solar cells have great potential for high efficiency generation but are subject to the impact of external environmental conditions such as humidity, UV and sun light, temperature, and electric fields. The long-term stability of perovskite solar cells is an important issue for their commercialization. Various studies on the stability of perovskite solar cells are currently being performed; however, the stability related to electric fields is rarely discussed. Here the electrical stability of perovskite solar cells is studied. Ion migration is confirmed using the temperature-dependent dark current decay. Changes in the power conversion efficiency according to the amount of the external bias are measured in the dark, and a significant drop is observed only at an applied voltage greater than 0.8 V. We demonstrate that perovskite solar cells are stable under an electric field up to the operating voltage.

Original language	English
Pages (from-to)	3091-3096
Number of pages	6
Journal	Journal of Physical Chemistry Letters
Volume	7
Issue number	16
DOIs	https://doi.org/10.1021/acs.jpclett.6b01176
Publication status	Published - 2016 Aug 18

ASJC Scopus subject areas

Materials Science(all)
Physical and Theoretical Chemistry

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title = "Electric-Field-Induced Degradation of Methylammonium Lead Iodide Perovskite Solar Cells",

abstract = "Perovskite solar cells have great potential for high efficiency generation but are subject to the impact of external environmental conditions such as humidity, UV and sun light, temperature, and electric fields. The long-term stability of perovskite solar cells is an important issue for their commercialization. Various studies on the stability of perovskite solar cells are currently being performed; however, the stability related to electric fields is rarely discussed. Here the electrical stability of perovskite solar cells is studied. Ion migration is confirmed using the temperature-dependent dark current decay. Changes in the power conversion efficiency according to the amount of the external bias are measured in the dark, and a significant drop is observed only at an applied voltage greater than 0.8 V. We demonstrate that perovskite solar cells are stable under an electric field up to the operating voltage.",

author = "Soohyun Bae and Seongtak Kim and Lee, {Sang Won} and Cho, {Kyung Jin} and Sungeun Park and Seunghun Lee and Yoonmook Kang and Lee, {Hae Seok} and Donghwan Kim",

note = "Funding Information: This work was supported by the International Collaborative Energy Technology RandD Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), granted financial resource from the Ministry of Trade, Industry and Energy, Republic of Korea. (No. 20138520011170). Publisher Copyright: {\textcopyright} 2016 American Chemical Society.",

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AU - Bae, Soohyun

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AU - Cho, Kyung Jin

AU - Park, Sungeun

AU - Lee, Seunghun

AU - Kang, Yoonmook

AU - Lee, Hae Seok

AU - Kim, Donghwan

N1 - Funding Information: This work was supported by the International Collaborative Energy Technology RandD Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), granted financial resource from the Ministry of Trade, Industry and Energy, Republic of Korea. (No. 20138520011170). Publisher Copyright: © 2016 American Chemical Society.

PY - 2016/8/18

Y1 - 2016/8/18

N2 - Perovskite solar cells have great potential for high efficiency generation but are subject to the impact of external environmental conditions such as humidity, UV and sun light, temperature, and electric fields. The long-term stability of perovskite solar cells is an important issue for their commercialization. Various studies on the stability of perovskite solar cells are currently being performed; however, the stability related to electric fields is rarely discussed. Here the electrical stability of perovskite solar cells is studied. Ion migration is confirmed using the temperature-dependent dark current decay. Changes in the power conversion efficiency according to the amount of the external bias are measured in the dark, and a significant drop is observed only at an applied voltage greater than 0.8 V. We demonstrate that perovskite solar cells are stable under an electric field up to the operating voltage.

AB - Perovskite solar cells have great potential for high efficiency generation but are subject to the impact of external environmental conditions such as humidity, UV and sun light, temperature, and electric fields. The long-term stability of perovskite solar cells is an important issue for their commercialization. Various studies on the stability of perovskite solar cells are currently being performed; however, the stability related to electric fields is rarely discussed. Here the electrical stability of perovskite solar cells is studied. Ion migration is confirmed using the temperature-dependent dark current decay. Changes in the power conversion efficiency according to the amount of the external bias are measured in the dark, and a significant drop is observed only at an applied voltage greater than 0.8 V. We demonstrate that perovskite solar cells are stable under an electric field up to the operating voltage.

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Electric-Field-Induced Degradation of Methylammonium Lead Iodide Perovskite Solar Cells

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