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Issue 6, 2020
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Dual-source vacuum deposition of pure and mixed halide 2D perovskites: thin film characterization and processing guidelines

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Abstract

The dual-source vacuum deposition of 2D perovskite films of the type PEA2PbX4, (PEA = phenethylammonium and X = I, Br, or a combination of both) is presented. Low-temperature deposited 2D perovskite films showed high crystallinity with the expected trend of bandgap as a function of halide type and concentration. Importantly, we observed an unavoidable halide cross-contamination among different deposition runs, as well as a strong dependence of the material quality on the type of halide precursors used. These findings should be taken into account in the development of vacuum processing for low-dimensional mixed halide perovskites.

Graphical abstract: Dual-source vacuum deposition of pure and mixed halide 2D perovskites: thin film characterization and processing guidelines

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Article information


Submitted
04 Dec 2019
Accepted
23 Jan 2020
First published
24 Jan 2020

J. Mater. Chem. C, 2020,8, 1902-1908
Article type
Communication

Dual-source vacuum deposition of pure and mixed halide 2D perovskites: thin film characterization and processing guidelines

M. La-Placa, D. Guo, L. Gil-Escrig, F. Palazon, M. Sessolo and H. J. Bolink, J. Mater. Chem. C, 2020, 8, 1902
DOI: 10.1039/C9TC06662D

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