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Machine learning-enabled chemical space exploration of all-inorganic perovskites for photovoltaics

Chemistry

Machine learning-enabled chemical space exploration of all-inorganic perovskites for photovoltaics

J. Kim, J. Noh, et al.

Discover a groundbreaking framework for designing B-site-alloyed ABX3 metal halide perovskites using advanced DFT and ML techniques. Researchers Jin-Soo Kim, Juhwan Noh, and Jino Im identify 10 promising compounds, including CsGe0.3125Sn0.6875I3, optimized for next-generation solar cells.

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Playback language: English
Abstract
This paper proposes a framework for designing B-site-alloyed ABX3 metal halide perovskites (MHPs) using density functional theory (DFT) and machine learning (ML). A crystal graph convolutional neural network (CGCNN) was trained on 3159 DFT datasets to predict decomposition energy, bandgap, and bandgap type. The trained model explored the chemical space of 41,400 B-site-alloyed MHPs, identifying 10 promising compounds with optimal bandgaps for single-junction and tandem solar cells, namely CsGe0.3125Sn0.6875I3 and CsGe0.0625Pb0.3125Sn0.625Br3.
Publisher
npj Computational Materials
Published On
May 08, 2024
Authors
Jin-Soo Kim, Juhwan Noh, Jino Im
Tags
B-site-alloyed
metal halide perovskites
density functional theory
machine learning
solar cells
bandgap
decomposition energy
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