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Chem Commun (Camb). 2017 Sep 21;53(76):10548-10551. doi: 10.1039/c7cc05590k.

Reduction of intrinsic defects in hybrid perovskite films via precursor purification.

Author information

1
Department of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China. qic@bit.edu.cn.

Abstract

A simple chemical process was developed in a scalable manner, to reduce trap states in perovskite absorbers from the very beginning. The obvious decrease of I2 in methylammonium iodide and the decrease of trap density in the resultant films were identified, which led to the power conversion efficiency (PCE) of perovskite solar cells (PSCs) increase from 16.5% to 18.5%.

PMID:
28890960
DOI:
10.1039/c7cc05590k

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