Issue 6, 2020

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

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

Supplementary files

Article information

Article type
Communication
Submitted
04 Dec. 2019
Accepted
23 Janv. 2020
First published
24 Janv. 2020

J. Mater. Chem. C, 2020,8, 1902-1908

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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