Back to Search
Start Over
Effect of external electric field on the electronic structure of MoSe2/Arsenene heterojunction.
- Source :
- Modern Physics Letters B; 2/10/2024, Vol. 38 Issue 4, p1-14, 14p
- Publication Year :
- 2024
-
Abstract
- In this paper, the effects of the thermostability, band structure, and the external electric field on the electronic structure of MoSe<subscript>2</subscript>/Arsenene heterojunction are calculated based on the density functional theory. The calculation results show that the MoSe<subscript>2</subscript>/Arsenene heterojunction is a type-II heterojunction with a bandgap of 0.89 eV. When MoSe<subscript>2</subscript> and arsenene combine by van der Waals force, the electrons are transferred from MoSe<subscript>2</subscript> to arsenene, the holes are transferred from arsenene to MoSe<subscript>2</subscript>, with the direction of the internal electric field from MoSe<subscript>2</subscript> to arsenene. The MoSe<subscript>2</subscript>/Arsenene heterojunction with valence band top and conduction band bottom contributed by arsenene and MoSe<subscript>2</subscript>, respectively, shows excellent thermostability at room temperature. The external electric field can effectively modulate the electronic structure of heterojunction. When the electric field is negative, electrons are transferred from MoSe<subscript>2</subscript> to arsenene and holes from arsenene to MoSe<subscript>2</subscript>. The Fermi level of arsenene moves down while that of MoSe<subscript>2</subscript> moves up. When the electric field is positive, the direction of electron and hole transfer are opposite to that when the electric field is negative. The Fermi energy level of arsenene and MoSe<subscript>2</subscript> also move in the opposite direction. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02179849
- Volume :
- 38
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- Modern Physics Letters B
- Publication Type :
- Academic Journal
- Accession number :
- 174066635
- Full Text :
- https://doi.org/10.1142/S0217984923502627