Band Structure of the IV-VI Black Phosphorus Analog and Thermoelectric SnSe

Physical Review Letters
I PletikosićT Valla

Abstract

The success of black phosphorus in fast electronic and photonic devices is hindered by its rapid degradation in the presence of oxygen. Orthorhombic tin selenide is a representative of group IV-VI binary compounds that are robust and isoelectronic and share the same structure with black phosphorus. We measure the band structure of SnSe and find highly anisotropic valence bands that form several valleys having fast dispersion within the layers and negligible dispersion across. This is exactly the band structure desired for efficient thermoelectric generation where SnSe has shown great promise.

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Citations

Jun 25, 2020·Physical Chemistry Chemical Physics : PCCP·Wenzhen DouPaul K Chu
Apr 11, 2020·Advanced Science·Xiao-Lei ShiZhi-Gang Chen
Jul 18, 2020·Scientific Reports·Tharith SrivHyeonsik Cheong
Nov 12, 2020·Advanced Science·Abdus Salam Sarkar, Emmanuel Stratakis
Sep 23, 2020·ACS Applied Materials & Interfaces·Gabriele BiancaFrancesco Bonaccorso

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