Wide band-gap tuning in Sn-based hybrid perovskites through cation replacement: the FA1−xMAxSnBr3 mixed system

Chiara Ferrara; Maddalena Patrini; Ambra Pisanu; Paolo Quadrelli; Chiara Milanese; Cristina Tealdi; Lorenzo Malavasi

doi:10.1039/C7TA01668A

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Wide band-gap tuning in Sn-based hybrid perovskites through cation replacement: the FA_1−xMA_xSnBr₃ mixed system†

Chiara Ferrara,^a Maddalena Patrini,^b Ambra Pisanu,^a Paolo Quadrelli,^a Chiara Milanese,^a Cristina Tealdi^a and Lorenzo Malavasi

*^a

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* Corresponding authors

^a Department of Chemistry, University of Pavia, Viale Taramelli 16, 27100 Pavia, Italy
E-mail: lorenzo.malavasi@unipv.it

^b Department of Physics, University of Pavia, Via Bassi 6, 27100 Pavia, Italy

Abstract

We report the synthesis and characterization of the first Sn-based mixed system, namely FA_1−xMA_xSnBr₃ (0 ≤ x ≤ 1), providing also the first study of the FASnBr₃ hybrid perovskite. The results indicate the formation of a continuous solid solution between the two end members with a huge modulation of the band gap induced by cation replacement. These results suggest the key role of protonated amines in the electronic structure in tin-based systems and a new and effective way of tuning the band gap.

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Article information

DOI: https://doi.org/10.1039/C7TA01668A
Article type: Paper
Submitted: 23 Feb 2017
Accepted: 13 Apr 2017
First published: 14 Apr 2017

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J. Mater. Chem. A, 2017,5, 9391-9395

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Wide band-gap tuning in Sn-based hybrid perovskites through cation replacement: the FA_1−xMA_xSnBr₃ mixed system

C. Ferrara, M. Patrini, A. Pisanu, P. Quadrelli, C. Milanese, C. Tealdi and L. Malavasi, J. Mater. Chem. A, 2017, 5, 9391 DOI: 10.1039/C7TA01668A

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Journal of Materials Chemistry A