Cmme -SnS: a two-dimensional tin sulfide nanosheet

The great success of graphene has triggered an enormous amount of interest in the search for new 2D materials. These materials open up excellent opportunities for nanoelectronics, optoelectronics and photocatalysis. Here, we designed a new 2D sheet of tin sulfide with space group Cmme (67), known as...

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Bibliographic Details
Published inJournal of materials chemistry. A, Materials for energy and sustainability Vol. 8; no. 40; pp. 21219 - 21226
Main Authors Ram, Babu, Mizuseki, Hiroshi
Format Journal Article
LanguageEnglish
Published Cambridge Royal Society of Chemistry 28.10.2020
Subjects
Dynamic stability
Energy gap
First principles
Graphene
Nanoelectronics
Nanosheets
Optoelectronics
Photocatalysis
Sulfide
Sulfides
Thermal stability
Tin
Tin disulfide
Transport properties
Two dimensional materials
Water splitting
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Summary:The great success of graphene has triggered an enormous amount of interest in the search for new 2D materials. These materials open up excellent opportunities for nanoelectronics, optoelectronics and photocatalysis. Here, we designed a new 2D sheet of tin sulfide with space group Cmme (67), known as Cmme -SnS using first-principles calculations. Cmme -SnS is a semiconductor with an indirect electronic band gap of 2.13 eV between Γ and M – X directions. It exhibits energetic, dynamical, mechanical, and thermal stability. This material shows direction-dependent transport properties where mobilities are mainly hole-dominated. We also observed significant improvement in the optical absorption in the visible region compared to monolayer SnS 2 . Interestingly, the well-located band edge positions and the appropriate band gap make this 2D material suitable for visible-light-driven photocatalytic water splitting.
ISSN:2050-7488
2050-7496
DOI:10.1039/D0TA05598K