期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 -, 期 -, 页码 -出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.2c07567
关键词
-
资金
- European Research Council (ERC) under the European Union?s [951786]
- VILLUM FONDEN [37789]
- (LI M A)
- [773122]
The discovery of high-performance materials is an active field in photovoltaics research. This study proposes a computationally efficient method to screen potential thin-film PV absorbers by accounting for phonon-assisted absorption across the indirect band gap. Through screening descriptors, 28 candidate materials, including 20 indirect band gap semiconductors, were identified.
Discovery of high-performance materials remains one of the most active areas in photovoltaics (PV) research. Indirect band gap materials form the largest part of the semiconductor chemical space, but predicting their suitability for PV applications from first-principles calculations remains challeng-ing. Here, we propose a computationally efficient method to account for phonon-assisted absorption across the indirect band gap and use it to screen 127 experimentally known binary semiconductors for their potential as thin-film PV absorbers. Using screening descriptors for absorption, carrier transport, and nonradiative recombination, we identify 28 potential candidate materials. The list, which contains 20 indirect band gap semiconductors, comprises well-established (3), emerging (16), and previously unexplored (9) absorber materials. Most of the new compounds are anion-rich chalcogenides (TiS3 and Ga2Te5) and phosphides (PdP2, CdP4, MgP4, and BaP3) containing homoelemental bonds and represent a new frontier in PV materials research. Our work highlights the previously underexplored potential of indirect band gap materials for optoelectronic thin-film technologies.
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