Issue 2, 2016

Enhanced UV-light stability of planar heterojunction perovskite solar cells with caesium bromide interface modification

Abstract

Interfacial engineering has been shown to play a vital role in boosting the performance of perovskite solar cells in the past few years. Here we demonstrate that caesium bromide (CsBr), as an interfacial modifier between the electron collection layer and the CH3NH3PbI3−xClx absorber layer, can effectively enhance the stability of planar heterojunction devices under ultra violet (UV) light soaking. Additionally, the device performance is improved due to the alleviated defects at the perovskite-titania heterojunction and enhanced electron extraction.

Graphical abstract: Enhanced UV-light stability of planar heterojunction perovskite solar cells with caesium bromide interface modification

Supplementary files

Article information

Article type
Communication
Submitted
21 Nov 2015
Accepted
04 Jan 2016
First published
04 Jan 2016
This article is Open Access
Creative Commons BY license

Energy Environ. Sci., 2016,9, 490-498

Enhanced UV-light stability of planar heterojunction perovskite solar cells with caesium bromide interface modification

W. Li, W. Zhang, S. Van Reenen, R. J. Sutton, J. Fan, A. A. Haghighirad, M. B. Johnston, L. Wang and H. J. Snaith, Energy Environ. Sci., 2016, 9, 490 DOI: 10.1039/C5EE03522H

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