Correction to “Identification of Killer Defects in Kesterite Thin-Film Solar Cells”
File(s)
Published version
Author(s)
Kim, Sunghyun
Park, Ji-Sang
Walsh, Aron
Type
Journal Article
Abstract
Nonradiative electron–hole recombination is the bottleneck to efficient kesterite thin-film solar cells. We have performed a search for active point defect recombination centers using first-principles calculations. We show that the anion vacancy in Cu2ZnSnS4 (CZTS) is electrically benign without a donor level in the band gap. VS can still act as an efficient nonradiative site through the aid of an intermediate excited state involving electron capture by Sn. The bipolaron associated with Sn4+ to Sn2+ two-electron reduction stabilizes the neutral sulfur vacancy over the charged states; however, we demonstrate a mechanism whereby nonradiative recombination can occur via multiphonon emission. Our study highlights that defect-mediated recombination does not require a charge transition level deep in the band gap of a semiconductor. We further identify SnZn as the origin of persistent electron trapping/detrapping in kesterite photovoltaic devices, which is suppressed in the selenide compound.
Date Issued
2018-04-05
Date Acceptance
2018-04-01
Citation
ACS ENERGY LETTERS, 2018, 3 (5), pp.1077-1077
ISSN
2380-8195
Publisher
American Chemical Society
Start Page
1077
End Page
1077
Journal / Book Title
ACS ENERGY LETTERS
Volume
3
Issue
5
Copyright Statement
© 2018 American Chemical Society. This is an open access article published under a Creative Commons Attribution (CC-BY https://pubs.acs.org/page/policy/authorchoice_ccby_termsofuse.html) License, which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000432478200003&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Physical Sciences
Technology
Chemistry, Physical
Electrochemistry
Energy & Fuels
Nanoscience & Nanotechnology
Materials Science, Multidisciplinary
Chemistry
Science & Technology - Other Topics
Materials Science
Publication Status
Published
Date Publish Online
2018-04-05