We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Strain Engineering on the Electronic and Optical Properties of WSSe Bilayer.
- Authors
Guo, Jian; Ke, Congming; Wu, Yaping; Kang, Junyong
- Abstract
Controllable optical properties are important for optoelectronic applications. Based on the unique properties and potential applications of two-dimensional Janus WSSe, we systematically investigate the strain-modulated electronic and optical properties of WSSe bilayer through the first-principle calculations. The preferred stacking configurations and chalcogen orders are determined by the binding energies. The bandgap of all the stable structures are found sensitive to the external stress and could be tailored from semiconductor to metallicity under appropriate compressive strains. Atomic orbital projected energy bands reveal a positive correlation between the degeneracy and the structural symmetry, which explains the bandgap evolutions. Dipole transition preference is tuned by the biaxial strain. A controllable transformation between anisotropic and isotropic optical properties is achieved under an around − 6%~− 4% critical strain. The strain controllable electronic and optical properties of the WSSe bilayer may open up an important path for exploring next-generation optoelectronic applications.
- Subjects
OPTICAL properties; OPTICAL engineering; ATOMIC orbitals; ISOTROPIC properties; ENERGY bands; ELECTRO-optical effects
- Publication
Nanoscale Research Letters, 2020, Vol 15, Issue 1, p1
- ISSN
1931-7573
- Publication type
Article
- DOI
10.1186/s11671-020-03330-z