Ba-induced phase segregation and band gap reduction in mixed-halide inorganic perovskite solar cells

Wanchun Xiang; Zaiwei Wang; Dominik J. Kubicki; Xueting Wang; Wolfgang Tress; Jingshan Luo; Jiahuan Zhang; Albert Hofstetter; Lijun Zhang; Lyndon Emsley; Michael Grätzel; Anders Hagfeldt

doi:10.1038/s41467-019-12678-5

Nature Communications (Oct 2019)

Ba-induced phase segregation and band gap reduction in mixed-halide inorganic perovskite solar cells

Wanchun Xiang,
Zaiwei Wang,
Dominik J. Kubicki,
Xueting Wang,
Wolfgang Tress,
Jingshan Luo,
Jiahuan Zhang,
Albert Hofstetter,
Lijun Zhang,
Lyndon Emsley,
Michael Grätzel,
Anders Hagfeldt

Affiliations

Wanchun Xiang: State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology
Zaiwei Wang: Laboratory of Photomolecular Science, Institute of Chemical Sciences Engineering, Ecole Polytechnique Fedérale de Lausanne (EPFL)
Dominik J. Kubicki: Laboratory of Photonics and Interfaces, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fedérale de Lausanne (EPFL)
Xueting Wang: State Key Laboratory of Superhard Materials, Key Laboratory of Automobile Materials of MOE, and School of Materials Science and Engineering, Jilin University
Wolfgang Tress: Laboratory of Photomolecular Science, Institute of Chemical Sciences Engineering, Ecole Polytechnique Fedérale de Lausanne (EPFL)
Jingshan Luo: Laboratory of Photonics and Interfaces, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fedérale de Lausanne (EPFL)
Jiahuan Zhang: Laboratory of Photomolecular Science, Institute of Chemical Sciences Engineering, Ecole Polytechnique Fedérale de Lausanne (EPFL)
Albert Hofstetter: Laboratory of Magnetic Resonance, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fedérale de Lausanne (EPFL)
Lijun Zhang: State Key Laboratory of Superhard Materials, Key Laboratory of Automobile Materials of MOE, and School of Materials Science and Engineering, Jilin University
Lyndon Emsley: Laboratory of Magnetic Resonance, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fedérale de Lausanne (EPFL)
Michael Grätzel: Laboratory of Photonics and Interfaces, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fedérale de Lausanne (EPFL)
Anders Hagfeldt: Laboratory of Photomolecular Science, Institute of Chemical Sciences Engineering, Ecole Polytechnique Fedérale de Lausanne (EPFL)

DOI: https://doi.org/10.1038/s41467-019-12678-5
Journal volume & issue: Vol. 10, no. 1
pp. 1 – 8

Abstract

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Element doping has been proven a useful strategy to tune the properties of halide perovskites. Here Xiang et al. show that barium unexpectedly does not incorporate in perovskite lattice but induces phase segregation and bandgap reduction and inhibits non-radiative recombination.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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