title: Binary-metal perovskites toward high-performance planar-heterojunction hybrid solar cells.
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.
authors.affiliation: Department of Materials Science and Engineering, University of Washington, Seattle, WA, 98195, USA.
authors.forename: Fan
authors.initials: F
authors.lastname: Zuo
authors.forename: Spencer T
authors.initials: ST
authors.lastname: Williams
authors.forename: Po-Wei
authors.initials: PW
authors.lastname: Liang
authors.forename: Chu-Chen
authors.initials: CC
authors.lastname: Chueh
authors.forename: Chien-Yi
authors.initials: CY
authors.lastname: Liao
authors.forename: Alex K-Y
authors.initials: AK
authors.lastname: Jen
keywords: crystallization control; extended light absorption; perovskite solar cell; planar heterojunction; tin replacement of lead