Issue 48, 2021

Impact of the polar optical phonon and alloy scattering on the charge-carrier mobilities of FA0.83Cs0.17Pb(I1−xBrx)3 hybrid perovskites

Abstract

Lead mixed-halide perovskites are promising absorption materials that are suitable for applications in tandem solar cells using existing silicon technology. Charge-carrier mobility is an important factor that affects the performance of tandem solar cells. However, a detailed understanding of the fundamental mechanisms of lead mixed-halide perovskites remains elusive. Here, we used LO (longitudinal optical) phonons and alloy scattering to the elucidate charge-carrier mobilities in the FA0.83Cs0.17Pb(I1−xBrx)3 hybrid perovskite system. It was found that these scattering mechanisms provided very good quantitative agreement with the experimental results, between 11–40 cm2 V−1 s−1. Our findings provide new insights into charge transport scattering in lead mixed-halide hybrid perovskites and pave the way toward design of novel semiconductor alloys for solar cell applications.

Graphical abstract: Impact of the polar optical phonon and alloy scattering on the charge-carrier mobilities of FA0.83Cs0.17Pb(I1−xBrx)3 hybrid perovskites

Supplementary files

Article information

Article type
Paper
Submitted
11 Aug 2021
Accepted
22 Nov 2021
First published
22 Nov 2021

Phys. Chem. Chem. Phys., 2021,23, 27320-27326

Impact of the polar optical phonon and alloy scattering on the charge-carrier mobilities of FA0.83Cs0.17Pb(I1−xBrx)3 hybrid perovskites

A. Thongnum, R. Pingaew and U. Pinsook, Phys. Chem. Chem. Phys., 2021, 23, 27320 DOI: 10.1039/D1CP03698J

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