Light-Soaking-Free Inverted Polymer Solar Cells with an Efficiency of 10.5% by Compositional and Surface Modifications to a Low-Temperature-Processed TiO2 Electron-Transport Layer

Yu Yan; Feilong Cai; Liyan Yang; Jinghai Li; Yiwei Zhang; Fei Qin; Chuanxi Xiong; Yinhua Zhou; David G Lidzey; Tao Wang

doi:10.1002/adma.201604044

Light-Soaking-Free Inverted Polymer Solar Cells with an Efficiency of 10.5% by Compositional and Surface Modifications to a Low-Temperature-Processed TiO₂ Electron-Transport Layer

Adv Mater. 2017 Jan;29(1). doi: 10.1002/adma.201604044. Epub 2016 Oct 27.

Authors

Yu Yan¹, Feilong Cai¹, Liyan Yang¹, Jinghai Li¹, Yiwei Zhang², Fei Qin³, Chuanxi Xiong¹, Yinhua Zhou³, David G Lidzey², Tao Wang¹

Affiliations

¹ School of Materials Science and Engineering, State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, 430070, China.
² Department of Physics and Astronomy, University of Sheffield, Sheffield, S3 7RH, UK.
³ Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, China.

PMID: 27786378
DOI: 10.1002/adma.201604044

Abstract

Compositional modification and surface treatments of a TiO₂ film prepared by a low-temperature route are carried out by a new promising method. Inverted polymer solar cells incorporating the post-treated TiO₂ :TOPD electron-transport layer achieve the highest efficiency of 10.5%, and more importantly, eliminate the light-soaking problem that is commonly observed in metal-oxide-based inverted polymer solar cells.

Keywords: inverted devices; light-soaking; metal oxides; polymer solar cells.