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Updated: Jun 16, 2025

Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model
Published on: May 23, 2018
Indirect and direct electronic transitions and electron transport properties of van der Waals NbOCl2
Yi Wang1, Yuqiang Wu1, Mengtao Sun1
1School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, China. mengtaosun@ustb.edu.cn.
Abstract:
In this paper, the optical and electron transport properties of the two-dimensional (2D) van der Waals (vdW) niobium oxide dichloride (NbOCl2) crystal with extremely high second-order nonlinear coefficients are investigated theoretically. We found that the strong absorption of NbOCl2 in the infrared region is caused by the indirect transition accompanied by phonons and confirmed that the interaction between layers is very weak. However, the study of electron transport properties shows that the interlayer interaction of NbOCl2 has a certain degree of influence on the scalability of electrical and optical properties. Because of the strong anisotropy of the NbOCl2 material, it will be a more optimized choice for constructing on-chip photoelectric or thermal devices in the Nb-Cl-Nb direction.
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