Lidé
MSc. Tahir Wahab
Všechny publikace
A first principles study of structural and optoelectronic properties and photocatalytic performance of GeC-MX2 (M = Mo and W; X = S and Se) van der Waals heterostructures
- Autoři: MSc. Tahir Wahab, Wang, Y., doc. Antonio Cammarata, Ph.D.,
- Publikace: Physical Chemistry Chemical Physics. 2023, 25(16), 11169-11175. ISSN 1463-9076.
- Rok: 2023
- DOI: 10.1039/d3cp00398a
- Odkaz: https://doi.org/10.1039/d3cp00398a
- Pracoviště: Katedra řídicí techniky
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Anotace:
Two-dimensional (2D) materials have received enormous attention as photocatalysts for hydrogen production to address the worldwide energy crisis. In this study, we employed first-principles computations to systematically investigate the structural, opto-electronic, and photocatalytic properties of novel GeC-MX2 (M = Mo, W, X = S, Se) van der Waals (vdW) heterostructures for photocatalysis applications. Our results reveal that the GeC-MX2 heterostructures can absorb visible light. The type-II band alignment in GeC-MoS2 and GeC-WS2 enables the photogenerated electron-hole pairs to be separated continuously. The electron transfer from the GeC monolayer to MX2 monolayer leads to a large built-in electric field at the interface. This induced electric field is essential for preventing the recombination of photogenerated charges. Moreover, the band-edge locations suggest that GeC-MX2 heterostructures can be utilized as a photocatalyst for water splitting. Finally, the opto-electronic properties of these novel GeC-MX2 heterostructures facilitate their practical utilization in future photocatalysis applications.