Issue 7, 2017

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

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

Supplementary files

Article information

Article type
Communication
Submitted
13 Dec 2016
Accepted
25 Jan 2017
First published
25 Jan 2017

J. Mater. Chem. A, 2017,5, 3203-3207

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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