No Cover Image

Journal article 1551 views 234 downloads

Ionic Influences on Recombination in Perovskite Solar Cells

Adam Pockett, Matt Carnie Orcid Logo

ACS Energy Letters, Volume: 2, Issue: 7, Pages: 1683 - 1689

Swansea University Authors: Adam Pockett, Matt Carnie Orcid Logo

  • acsenergylett.7b00490.pdf

    PDF | Version of Record

    Released under the terms of a Creative Commons Attribution (CC-BY) License.

    Download (1.19MB)

Check full text

DOI (Published version): 10.1021/acsenergylett.7b00490

Abstract

The origins of recombination processes, particularly those that relate to IV hysteresis, are still unclear in perovskite solar cells. Of particular interest, is the impact different contact materials have on the level of hysteresis observed. This work shows that there is a clear link between ionic m...

Full description

Published in: ACS Energy Letters
ISSN: 2380-8195 2380-8195
Published: 2017
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa34445
Tags: Add Tag
No Tags, Be the first to tag this record!
Abstract: The origins of recombination processes, particularly those that relate to IV hysteresis, are still unclear in perovskite solar cells. Of particular interest, is the impact different contact materials have on the level of hysteresis observed. This work shows that there is a clear link between ionic movement and interfacial recombination, which have both been shown to be responsible for hysteresis. By performing low temperature transient photovoltage (TPV) measurements over a period in which ions redistribute within the perovskite layer, the dominant recombination mechanism, responsible for hysteresis and other slow dynamic processes, is found to occur at the TiO2/perovskite interface. We observe an anomalous negative transient upon firing the laser pulse which we attribute to interfacial recombination at the TiO2/perovskite interface. The impact of recombination at the perovskite/HTL interface is shown to be negligible by performing TPV measurements using different laser wavelengths to probe different depths into the perovskite layer, as well as by changing the type of HTL used.
College: Faculty of Science and Engineering
Issue: 7
Start Page: 1683
End Page: 1689

Similar Items