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- Title
First-Principles Study of Enhanced Absorption in Van der Waals Heterostructure of MoS<sub>2</sub>/Cd<sub>0.90</sub>Zn<sub>0.10</sub>Te<sub>0.93</sub>Se<sub>0.07</sub> in the Visible Region.
- Authors
Chauhan, Anurag; Tomar, Prateek
- Abstract
To explore the optoelectronic characteristics of the quaternary compound, cadmium zinc telluride selenium (Cd0.90Zn0.10Te0.93Se0.07), and monolayer MoS2, DFT simulations are performed on the van der Waals (vdW) heterostructure. Cd0.90Zn0.10Te0.93Se0.07 and monolayer MoS2 are investigated and found to exhibit absorption in the ranges of ∼180 to 350 nm and ∼150 to 300 nm, respectively, and the MoS2/Cd0.90Zn0.10Te0.93Se0.07 heterostructure showed in a redshift phenomenon with low absorption outside the visible region. The absorption coefficient (αα) shifted towards a higher wavelength with selective absorption in the range ∼450 to 640 nm with negligible interference from the UV and infrared regions. This consistent absorption in the visible spectrum demonstrates its uses in optoelectronics and suggests its possibility as a suitable material for solar cells. These findings have been corroborated by the results obtained for the refractive index (η) and dielectric constant (ε).
- Subjects
CADMIUM zinc telluride; ABSORPTION coefficients; ABSORPTION; TRACE elements; VISIBLE spectra; SOLAR cells
- Publication
Journal of Electronic Materials, 2022, Vol 51, Issue 11, p6595
- ISSN
0361-5235
- Publication type
Article
- DOI
10.1007/s11664-022-09901-3