Rapid vapor-phase deposition of high-mobility p-Type buffer layers on perovskite photovoltaics for efficient semi-transparent devices
File(s)
Supporting information
Accepted version
Author(s)
Type
Journal Article
Abstract
Perovskite solar cells (PSCs) with transparent electrodes can be integrated with existing solar panels in tandem configurations to increase the power conversion efficiency. A critical layer in semi-transparent PSCs is the inorganic buffer layer, which protects the PSC against damage when the transparent electrode is sputtered on top. The development of n-i-p structured semi-transparent PSCs has been hampered by the lack of suitable p-type buffer layers. In this work we develop a p-type CuOx buffer layer, which can be grown uniformly over the perovskite device without damaging the perovskite or organic hole transport layers. The CuOx layer has high hole mobility (4.3 ± 2 cm2 V-1 s-1), high transmittance (>95%), and a suitable ionization potential for hole extraction (5.3 ± 0.2 eV). Semi-transparent PSCs with efficiencies up to 16.7% are achieved using the CuOx buffer layer. Our work demonstrates a new approach to integrate n-i-p structured PSCs into tandem configurations, as well as enable the development of other devices that need high quality, protective p-type layers.
Date Issued
2020-08-14
Date Acceptance
2020-06-22
Citation
ACS Energy Letters, 2020, 5 (8), pp.2456-2465
ISSN
2380-8195
Publisher
American Chemical Society (ACS)
Start Page
2456
End Page
2465
Journal / Book Title
ACS Energy Letters
Volume
5
Issue
8
Copyright Statement
© 2020 American Chemical Society. This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Energy Lett., after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsenergylett.0c00763
Sponsor
Downing College, Cambridge
Royal Academy of Engineering
Royal Academy Of Engineering
Centre of Advanced Materials for Integrated Energy Systems
Isaac Newton Trust
Identifier
https://pubs.acs.org/doi/10.1021/acsenergylett.0c00763
Grant Number
RF\201718\17101
RF\201718\17101
EP/P007767/1
Minute 19.07(d)
Publication Status
Published
Article Number
acsenergylett.0c00763
Date Publish Online
2020-06-22