Elastic Modulus of Polycrystalline Halide Perovskite Thin Films on Substrates

2023/07/13 by Layek, Madhuja, Yang, In Seok, Dai, Zhenghong +5
#FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci)

paper · doi:10.48550/arxiv.2307.07071

Abstract

Using an innovative combination of multi-beam-optical stress-sensor (MOSS) curvature and X-ray diffraction (XRD) techniques, the Young's modulus (E) of polycrystalline MAPbI3 metal-halide perovskite (MHP) thin films attached to Si substrates is estimated to be 10.2 +/- 3.4 GPa. This is comparable to the E of corresponding MAPbI3 single-crystals. This generic method could be applied to other systems to estimate hard-to-measure E of thin films.

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