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.
authors.affiliation: Department of Materials Science and Engineering, Korea University , Seongbuk-gu, Anam-dong, 136-713 Seoul, Korea.
authors.forename: Soohyun
authors.initials: S
authors.lastname: Bae
authors.affiliation: Department of Materials Science and Engineering, Korea University , Seongbuk-gu, Anam-dong, 136-713 Seoul, Korea.
authors.forename: Seongtak
authors.initials: S
authors.lastname: Kim
authors.affiliation: Department of Materials Science and Engineering, Korea University , Seongbuk-gu, Anam-dong, 136-713 Seoul, Korea.
authors.forename: Sang-Won
authors.initials: SW
authors.lastname: Lee
authors.affiliation: Department of Materials Science and Engineering, Korea University , Seongbuk-gu, Anam-dong, 136-713 Seoul, Korea.
authors.forename: Kyung Jin
authors.initials: KJ
authors.lastname: Cho
authors.affiliation: Department of Materials Science and Engineering, Korea University , Seongbuk-gu, Anam-dong, 136-713 Seoul, Korea.|Department of Solar Cells - Development and Characterization, Fraunhofer Institute for Solar Energy Systems ISE , Heidenhofstr. 2, 79110 Freiburg, Germany.
authors.forename: Sungeun
authors.initials: S
authors.lastname: Park
authors.affiliation: Department of Materials Science and Engineering, Korea University , Seongbuk-gu, Anam-dong, 136-713 Seoul, Korea.|Department of Solar Cells - Development and Characterization, Fraunhofer Institute for Solar Energy Systems ISE , Heidenhofstr. 2, 79110 Freiburg, Germany.
authors.forename: Seunghun
authors.initials: S
authors.lastname: Lee
authors.affiliation: KU•KIST Green School, Graduate School of Energy and Environment, Korea University , Seongbuk gu, Anam dong, 136-713 Seoul, Korea.
authors.forename: Yoonmook
authors.initials: Y
authors.lastname: Kang
authors.affiliation: Department of Materials Science and Engineering, Korea University , Seongbuk-gu, Anam-dong, 136-713 Seoul, Korea.
authors.forename: Hae-Seok
authors.initials: HS
authors.lastname: Lee
authors.affiliation: Department of Materials Science and Engineering, Korea University , Seongbuk-gu, Anam-dong, 136-713 Seoul, Korea.
authors.forename: Donghwan
authors.initials: D
authors.lastname: Kim