Light-Soaking-Free Inverted Polymer Solar Cells with an Efficiency of 10.5% by Compositional and Surface Modifications to a Low-Temperature-Processed TiO<sub>2</sub> Electron-Transport Layer.

Yan, Yu; Cai, Feilong; Yang, Liyan; Li, Jinghai; Zhang, Yiwei; Qin, Fei; Xiong, Chuanxi; Zhou, Yinhua et al. · Adv Mater · 2017

basic_science · Level V

Where this comes from

Abstract

Compositional modification and surface treatments of a TiO<sub>2</sub> film prepared by a low-temperature route are carried out by a new promising method. Inverted polymer solar cells incorporating the post-treated TiO<sub>2</sub> :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.