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Publication type: Article in scientific journal
Type of review: Peer review (publication)
Title: Outstanding passivation effect by a mixed-salt interlayer with internal interactions in perovskite solar cells
Authors: Yang, Bowen
Suo, Jiajia
Mosconi, Edoardo
Ricciarelli, Damiano
Tress, Wolfgang
De Angelis, Filippo
Kim, Hui-Seon
Hagfeldt, Anders
et. al: No
DOI: 10.1021/acsenergylett.0c01664
Published in: ACS Energy Letters
Volume(Issue): 5
Issue: 10
Page(s): 3159
Pages to: 3167
Issue Date: 2020
Publisher / Ed. Institution: American Chemical Society
ISSN: 2380-8195
Language: English
Subject (DDC): 
Abstract: Nonradiative recombination is a major limiting factor in obtaining efficient metal-halide perovskite photovoltaics. Here, a passivation treatment is developed by applying a mixture of a new ammonium salt, CF3(CF2)2CH2NH3I (HBAI), and a conventional formamidinium halide, FAX, on top of the 3D perovskite bulk film. The introduction of such an optimized passivation layer effectively suppressed charge recombination by passivating the surface traps of the 3D perovskite film, enabling a wellmatched energy alignment at the interface of perovskite/HTM, leading to a high power conversion efficiency (PCE) of over 23% from current−voltage (I−V) measurements and a stabilized 22.7% PCE, owing to a substantial VOC improvement (above 80 mV on average), coupled with an improved stability.
Further description: This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Energy Letters, © 2020 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see
Fulltext version: Accepted version
License (according to publishing contract): Licence according to publishing contract
Restricted until: 2021-09-14
Departement: School of Engineering
Organisational Unit: Institute of Computational Physics (ICP)
Appears in collections:Publikationen School of Engineering

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