No Cover Image

Journal article 1117 views 301 downloads

Initial Stages of Photodegradation of MAPbI3 Perovskite: Accelerated Aging with Concentrated Sunlight

Renjun Guo, Mark V. Khenkin, Georgios E. Arnaoutakis, Nataliya A. Samoylova, Jérémy Barbé, Harrison Ka Hin Lee, Wing Chung Tsoi, Eugene A. Katz, Wing Chung Tsoi Orcid Logo

Solar RRL, Start page: 1900270

Swansea University Author: Wing Chung Tsoi Orcid Logo

Check full text

DOI (Published version): 10.1002/solr.201900270

Abstract

The initial stages of photo‐degradation of CH3NH3PbI3 (MAPbI3) thin films prior to any significant change in light absorption are studied in experiments with independent control of sample temperature and intensity of concentrated sunlight from 50 to 500 suns. Photo‐stability of the MAPbI3 film is re...

Full description

Published in: Solar RRL
ISSN: 2367-198X 2367-198X
Published: 2019
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa51311
Abstract: The initial stages of photo‐degradation of CH3NH3PbI3 (MAPbI3) thin films prior to any significant change in light absorption are studied in experiments with independent control of sample temperature and intensity of concentrated sunlight from 50 to 500 suns. Photo‐stability of the MAPbI3 film is revealed to be extremely sensitive to the sample temperature. Under the combined action of light and heat (either by concentrated sunlight or by external heating), a strong reduction of the film photoluminescence (PL) without changes in the perovskite light absorption can be observed during the initial stages of degradation. In contrast, illumination of perovskite films (with intensity up to 500 suns) without heating (using chopped concentrated sunlight) induces considerable PL enhancement while the optical absorption spectrum remains unchanged. With accurate temperature control, aging under concentrated sunlight results in similar instability trends as that under 1 sun.
College: Faculty of Science and Engineering
Start Page: 1900270

Similar Items