Binary-metal perovskites toward high-performance planar-heterojunction hybrid solar cells.

Zuo, Fan; Williams, Spencer T; Liang, Po-Wei; Chueh, Chu-Chen; Liao, Chien-Yi; Jen, Alex K-Y · Adv Mater · 2014

basic_science · Level V

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Abstract

A simple, low temperature solution process for Pb/Sn binary-metal perovskite planar-heterojunction solar cells is demonstrated. Sn inclusion substantially influences the band-gap, crystallization kinetics, and thin-film formation leading to a broadened light absorption and enhanced film coverage on ITO/PEDOT:PSS. As a result, the optimized device shows a PCE exceeding 10%, which is the best result for binary-metal perovskite solar cells so far.