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Issue 7, 2017
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Efficient wide band gap double cation – double halide perovskite solar cells

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Abstract

In this work we study the band gap variation and properties of the perovskite compound Cs0.15FA0.85Pb(BrxI1−x)3 as a function of the halide composition, with the aim of developing an efficient complementary absorber for MAPbI3 in all-perovskite tandem devices. We have found the perovskite stoichiometry Cs0.15FA0.85Pb(Br0.7I0.3)3 to be a promising candidate, thanks to its band gap of approximately 2 eV. Single junction devices using this perovskite absorber lead to a maximum PCE of 11.5%, among the highest reported for solar cells using perovskites with a band gap wider than 1.8 eV.

Graphical abstract: Efficient wide band gap double cation – double halide perovskite solar cells

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Supplementary files

Article information


Submitted
13 Dec 2016
Accepted
25 Jan 2017
First published
25 Jan 2017

J. Mater. Chem. A, 2017,5, 3203-3207
Article type
Communication

Efficient wide band gap double cation – double halide perovskite solar cells

D. Forgács, D. Pérez-del-Rey, J. Ávila, C. Momblona, L. Gil-Escrig, B. Dänekamp, M. Sessolo and H. J. Bolink, J. Mater. Chem. A, 2017, 5, 3203
DOI: 10.1039/C6TA10727C

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