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Tunable electronic and optical properties of WSe₂/Si₂H heterojunction via electric field

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成果类型：

期刊论文

作者：

Liang, Xianxiao;Zhao, Hongquan;Zhao, Yang;Deng, Xueyi;Xiao, Zeyun;...

通讯作者：

Shi, X;Zhao, HQ;Yuan, HK

作者机构：

[Liang, Xianxiao; Zhao, Yang; Shi, Xuan; Shi, X; Deng, Xueyi] Chongqing Univ Posts & Telecommun, Sch Optoelect Engn, Chongqing 400065, Peoples R China.

[Liang, Xianxiao; Zhao, Yang; Shi, Xuan; Shi, X; Xiao, Zeyun; Peng, Xiaoyu; Deng, Xueyi] Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China.

[Zhao, Hongquan] South China Univ, Sch Elect Engn, Hengyang, Peoples R China.

[Yuan, Hongkuan] Southwest Univ, Sch Phys Sci & Technol, Chongqing, Peoples R China.

通讯机构：

[Yuan, HK ; Zhao, HQ ] S

[Shi, X ] C

Chongqing Univ Posts & Telecommun, Sch Optoelect Engn, Chongqing 400065, Peoples R China.

Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China.

South China Univ, Sch Elect Engn, Hengyang, Peoples R China.

语种：

英文

关键词：

WSe2/Si2H heterojunction;first principles;extra electric field;optical absorption coefficient

期刊：

PHYSICA SCRIPTA

ISSN：

0031-8949

年：

2024

卷：

期：

页码：

025986

DOI：

10.1088/1402-4896/ad1da9

基金类别：

National Nature Science Foundation of China; Natural Science Foundation of Chongqing, China [cstc2019jcyj-zdxmX0003, cstc2019jcyj-msxmX0387]; Project of Chongqing talents [CQYC202002064]; Youth Innovation Promotion Association CAS; [61775214]

机构署名：

本校为通讯机构

院系归属：

电气工程学院

摘要：

Abstract Van der Waals heterojunctions based on two-dimensional (2D) materials hold great potential applications in photodetectors. Using the density functional theory (DFT) method, the structures, electronic and optical properties of van der Waals WSe2/Si2H heterojunction are investigated. 1.32 eV of indirect bandgap is calculated from the WSe2/Si2H heterojunction, which is 0.3 eV and 0.1 eV smaller than those of its monolayer WSe2 and Si2H. This contributes to the photocarrier generations, and the Type-II heterojunction also benefits to the ...

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Tunable electronic and optical properties of WSe₂/Si₂H heterojunction via electric field

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