δ-CS: A Direct-Band-Gap Semiconductor Combining Auxeticity, Ferroelasticity, and Potential for High-Efficiency Solar Cells

Minglei Sun

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

We propose a two-dimensional material, δ-CS, and show that it is a direct-band-gap semiconductor with strong absorption of solar radiation. Power conversion efficiencies of 7.0% to 20.1% are predicted for solar cells with δ-CS as a donor and a transition metal dichalcogenide as an acceptor. δ-CS also excels in terms of having an exceptionally large negative in-plane Poisson's ratio. Its ferroelasticity with moderate switching barrier is promising for applications in shape memory devices.
Original languageEnglish (US)
JournalPhysical Review Applied
Volume14
Issue number4
DOIs
StatePublished - Oct 10 2020

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