Efficient and uniform planar-type perovskite solar cells by simple sequential vacuum deposition.

Chen, Chang-Wen; Kang, Hao-Wei; Hsiao, Sheng-Yi; Yang, Po-Fan; Chiang, Kai-Ming; Lin, Hao-Wu · Adv Mater · 2014

basic_science · Level V

Where this comes from

Abstract

A novel sequential layer-by-layer sub-100 °C vacuum-sublimation method to fabricate planar-type organometal halide perovskite solar cells is developed. Very uniform and highly crystalline perovskite thin films with 100% surface coverage are produced. The cells attain maximum and average efficiencies up to 15.4% and 14%, respectively. This low- temperature, all-vacuum process is suitable for a wide variety of rigid and flexible applications.