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Proceedings Paper

First-principles studies of radiative and nonradiative recombination in halide perovskites (Conference Presentation)

Paper Abstract

Understanding recombination mechanisms in halide perovskites is of key importance to their applications in photovoltaics and light emission. We perform first-principles calculations to compute the radiative and nonradiative recombination coefficients in the methylammonium lead iodide as well as in other halide perovskites. The computed radiative recombination coefficient is as high as in typical direct-gap semiconductors used in optoelectronics. However, our first-principles calculations of nonradiative rates show that strong Auger recombination will suppress efficiency of light emitters. I will also discuss defect-assisted recombination, a problem closely coupled to the issue of degradation. Work performed in collaboration with Xie Zhang, Jimmy-Xuan Shen, and Wennie Wang, and supported by DOE.

Paper Details

Date Published: 9 March 2020
Proc. SPIE 11302, Light-Emitting Devices, Materials, and Applications XXIV, 1130206 (9 March 2020); doi: 10.1117/12.2538696
Show Author Affiliations
Chris G. Van de Walle, Univ. of California, Santa Barbara (United States)

Published in SPIE Proceedings Vol. 11302:
Light-Emitting Devices, Materials, and Applications XXIV
Jong Kyu Kim; Michael R. Krames; Martin Strassburg, Editor(s)

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