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Publication type: Article in scientific journal
Type of review: Not specified
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
Pages: 3159
Pages to: 3167
Issue Date: 2020
Publisher / Ed. Institution: American Chemical Society
ISSN: 2380-8195
Language: English
Subject (DDC): 621.3: Electrical engineering and electronics
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.
Fulltext version: Accepted version
License (according to publishing contract): Licence according to publishing contract
Departement: School of Engineering
Organisational Unit: Institute of Computational Physics (ICP)
Appears in Collections:Publikationen School of Engineering

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