Phosphonium Halides as Both Processing Additives and Interfacial Modifiers for High Performance Planar-Heterojunction Perovskite Solar Cells

Chen Sun; Qifan Xue; Zhicheng Hu; Ziming Chen; Fei Huang; Hin-Lap Yip; Yong Cao

doi:10.1002/smll.201403344

Phosphonium Halides as Both Processing Additives and Interfacial Modifiers for High Performance Planar-Heterojunction Perovskite Solar Cells

Small. 2015 Jul 15;11(27):3344-50. doi: 10.1002/smll.201403344. Epub 2015 Feb 12.

Authors

Chen Sun¹, Qifan Xue¹, Zhicheng Hu¹, Ziming Chen¹, Fei Huang¹, Hin-Lap Yip¹, Yong Cao¹

Affiliation

¹ Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, P.R. China.

PMID: 25682920
DOI: 10.1002/smll.201403344

Abstract

Organic halide salts are successfully incorporated in perovskite-based planar-heterojunction solar cells as both the processing additive and interfacial modifier to improve the morphology of the perovskite light-absorbing layer and the charge collecting property of the cathode. As a result, perovskite solar cells exhibit a significant improvement in power conversion efficiency (PCE) from 10% of the reference device to 13% of the modified devices.

Keywords: interfacial engineering; perovskite solar cells; planar heterojunctions; processing additives.

Publication types

Research Support, Non-U.S. Gov't