Alleviating hysteresis and improving device stability of perovskite solar cells via alternate voltage sweeps

doi:10.1088/1674-1056/26/1/018401

Abstract The anomalous hysteresis in a perovskite solar cell induced by an asymmetric field is confirmed by a capacitance-voltage measurement. By applying several cycles of alternating reverse and forward scans, this hysteresis phenomenon is obviously alleviated, resulting in a hysteresis-less state in the perovskite solar cell. Meanwhile, the open-circuit voltage and power conversion efficiency of the perovskite solar cell are enhanced by 55.74% and 61.30%, respectively, while the current density and fill factor keep almost invariable. The operation of alleviating hysteresis is essential for further research and is likely to bring in performance gains.

Keywords: perovskite solar cells hysteresis behavior alternate voltage sweeps built-in electric field

Received: 18 May 2016
Revised: 11 September 2016
Accepted manuscript online:

PACS:	84.60.Jt	(Photoelectric conversion)
	88.40.H-	(Solar cells (photovoltaics))
	75.60.Ej	(Magnetization curves, hysteresis, Barkhausen and related effects)
	94.20.Ss	(Electric fields; current system)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11474105 and 51172079), the Science and Technology Program of Guangdong Province, China (Grant Nos. 2015B090903078 and 2015B010105011), the Science and Technology Project of Guangzhou City, China (Grant No. 201607010246), and the Program for Changjiang Scholars and Innovative Research Team in Universities of China (Grant No. IRT13064).

Corresponding Authors: Shu-Ti Li
E-mail: lishuti@scnu.edu.cn

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Chao Xia(夏超), Wei-Dong Song(宋伟东), Chong-Zhen Zhang(张崇臻), Song-Yang Yuan(袁松洋), Wen-Xiao Hu(胡文晓), Ping Qin(秦萍), Ru-Peng Wang(王汝鹏), Liang-Liang Zhao(赵亮亮), Xing-Fu Wang(王幸福), Miao He(何苗), Shu-Ti Li(李述体) Alleviating hysteresis and improving device stability of perovskite solar cells via alternate voltage sweeps 2017 Chin. Phys. B 26 018401

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Alleviating hysteresis and improving device stability of perovskite solar cells via alternate voltage sweeps

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