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

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

Author information

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

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

PMID:
25158905
DOI:
10.1002/adma.201401685

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