High-performance cadmium sulphide-based planar perovskite solar cell and the cadmium sulphide/perovskite interfaces

Haitao Peng; Weihai Sun; Yunlong Li; Weibo Yan; Pingrong Yu; Huanping Zhou; Zuqiang Bian; Chunhui Huang

doi:10.1117/1.JPE.6.022002

15 April 2016 High-performance cadmium sulphide-based planar perovskite solar cell and the cadmium sulphide/perovskite interfaces

Haitao Peng, Weihai Sun, Yunlong Li, Weibo Yan, Pingrong Yu, Huanping Zhou, Zuqiang Bian, Chunhui Huang

Author Affiliations +

Journal of Photonics for Energy, Vol. 6, Issue 2, 022002 (April 2016). https://doi.org/10.1117/1.JPE.6.022002

Abstract

Planar heterojunction perovskite solar cell is one of the most competitive photovoltaic technologies, while charge transport materials play a crucial role. We successfully demonstrated an effective electron transport material, namely chemical bath deposited cadmium sulphide (CdS) film under low temperature, in perovskite-based solar cells. Power conversion efficiency of 16.1% has been achieved, which is comparable to that of devices based on TiO₂ film prepared via low-temperature processes. Electronic impedance spectra reveal that the CdS-based device presents a higher recombination resistance than TiO₂-based devices, which reduces carrier recombination and increases the open circuit voltage. The interface between CdS and perovskite was characterized with improved characteristics when compared to TiO₂, e.g., efficient carrier extraction and reduced surface defect–associated degradation in the devices, which help to alleviate anomalous hysteresis and long-term instability. Furthermore, the entire device was fabricated via solution process with a processing temperature below 100°C, suggesting a promising method of further development of perovskite solar cells and commercial manufacturing.

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Haitao Peng, Weihai Sun, Yunlong Li, Weibo Yan, Pingrong Yu, Huanping Zhou, Zuqiang Bian, and Chunhui Huang "High-performance cadmium sulphide-based planar perovskite solar cell and the cadmium sulphide/perovskite interfaces," Journal of Photonics for Energy 6(2), 022002 (15 April 2016). https://doi.org/10.1117/1.JPE.6.022002

Published: 15 April 2016

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