Journal article

Publication year: 2021

Pages: 3906-3911

Journal: Angewandte Chemie International Edition

Volume number: 60

Issue number: 8

ISSN: 1433-7851

eISSN: 1521-3773

Open access status: Hybrid

DOI Link: https://doi.org/10.1002/anie.202014696

Publisher: Wiley

Abstract: 
Doping and alloying are valuable tools for modifying and enhancing the properties and performance of lead halide perovskites. However, the effects of heterovalent doping with Sb3+ and Bi3+ cations are still a matter of current investigation. Due to the different charge of the dopants compared to the constituting Pb2+ ions, a simultaneous creation of defects is unavoidable and the influence of these defects and the actual metal substitution become entangled. Herein, we present the first 14-15 iodido metalates, (BED)(4)PbE2I16 (BED=N-benzylethylenediammonium; E=Sb (1), Bi (2)), which are model compounds for doped lead iodide perovskites and display surprisingly low band gaps of 2.01 (1) and 1.88 eV (2). Quantum chemical investigations show that this stems from a good electronic match between the PbI6 and EI6 units of the compounds. Our results provide a model system for doped perovskites, but also represent the first examples of a promising new class of metal halide materials.

Harvard Citation style: Dehnhardt, N., Luy, J., Klement, P., Schipplick, L., Chatterjee, S., Tonner, R., et al. (2021) Mixed Group 14-15 Metalates as Model Compounds for Doped Lead Halide Perovskites, Angewandte Chemie International Edition, 60(8), pp. 3906-3911. https://doi.org/10.1002/anie.202014696

APA Citation style: Dehnhardt, N., Luy, J., Klement, P., Schipplick, L., Chatterjee, S., Tonner, R., & Heine, J. (2021). Mixed Group 14-15 Metalates as Model Compounds for Doped Lead Halide Perovskites. Angewandte Chemie International Edition. 60(8), 3906-3911. https://doi.org/10.1002/anie.202014696