Solvent annealing of perovskite-induced crystal growth for photovoltaic-device efficiency enhancement

Zhengguo Xiao; Qingfeng Dong; Cheng Bi; Yuchuan Shao; Yongbo Yuan; Jinsong Huang

doi:10.1002/adma.201401685

Solvent annealing of perovskite-induced crystal growth for photovoltaic-device efficiency enhancement

Adv Mater. 2014 Oct 8;26(37):6503-9. doi: 10.1002/adma.201401685. Epub 2014 Aug 26.

Authors

Zhengguo Xiao¹, Qingfeng Dong, Cheng Bi, Yuchuan Shao, Yongbo Yuan, Jinsong Huang

Affiliation

¹ Department of Mechanical and Materials Engineering and Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln, Lincoln, NE, 68588-0526, USA.

PMID: 25158905
DOI: 10.1002/adma.201401685

Abstract

Solvent-annealing is found to be an effective method to increase the grain size and carrier diffusion lengths of trihalide perovskite materials. The carrier diffusion length of MAPbI3 is increased to over 1 μm. The efficiency remains above 14.5% when the MAPbI3 thickness changes from 250 nm to 1 μm, with the highest efficiency reaching 15.6%.

Keywords: crystallinity; grain size; perovskite; solar cells; solvent annealing.

Publication types

Research Support, U.S. Gov't, Non-P.H.S.