Tunable band offsets in the BP/P4O10 van der Waals heterostructure: first-principles calculations

2018 ◽  
Vol 20 (47) ◽  
pp. 29931-29938 ◽  
Author(s):  
Wenzhen Dou ◽  
Anping Huang ◽  
Hongliang Shi ◽  
Xinjiang Zhang ◽  
Xiaohu Zheng ◽  
...  

The separation of photoexcited electron–hole pairs in the BP/P4O10 vdW heterostructure.

Crystals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 470
Author(s):  
Lingxia Zhang ◽  
Le Huang ◽  
Tao Yin ◽  
Yibin Yang

The electronic structure and band offsets of blue phosphorus/WSe2 van der Waals (vdW) heterostructure are investigated via performing first-principles calculations. Blue phosphorus/WSe2 vdW heterostructure exhibits modulation of bandgaps by the applied vertical compressive strain, and a large compressive strain of more than 23% leads to a semiconductor-to-metal transition. Blue phosphorus/WSe2 vdW heterostructure is demonstrated to have a type-II band alignment, which promotes the spontaneous spatial separation of photo-excited electrons and holes. Furthermore, electrons concentrating in BlueP and holes in WSe2 can be enhanced by applied compressive strain, resulting in an increase of carrier concentration. Therefore, these properties make blue phosphorus/WSe2 vdW heterostructure a good candidate for future applications in photodetection.


2020 ◽  
Vol 1 (6) ◽  
pp. 1849-1857
Author(s):  
Huabing Shu

Electric-field-driving effective separation of photoexcited electron–hole pairs in the P2/MoSe2 vdW heterostructure.


2021 ◽  
Vol 23 (6) ◽  
pp. 3963-3973
Author(s):  
Jianxun Song ◽  
Hua Zheng ◽  
Minxia Liu ◽  
Geng Zhang ◽  
Dongxiong Ling ◽  
...  

The structural, electronic and optical properties of a new vdW heterostructure, C2N/g-ZnO, with an intrinsic type-II band alignment and a direct bandgap of 0.89 eV at the Γ point are extensively studied by DFT calculations.


2020 ◽  
Vol 22 (9) ◽  
pp. 4946-4956 ◽  
Author(s):  
Wenyu Guo ◽  
Xun Ge ◽  
Shoutian Sun ◽  
Yiqun Xie ◽  
Xiang Ye

The structural, mechanical and electronic properties of the MoSSe/WSSe van der Waals (vdW) heterostructure under various degrees of horizontal and vertical strain are systematically investigated based on first-principles methods.


RSC Advances ◽  
2017 ◽  
Vol 7 (24) ◽  
pp. 14625-14630 ◽  
Author(s):  
Jimin Shang ◽  
Shuai Zhang ◽  
Xuerui Cheng ◽  
Zhongming Wei ◽  
Jingbo Li

By using first-principles calculations, we investigate the electronic properties of a ZrS2/HfS2 heterostructure modulated by an external electric field.


Author(s):  
Yuliang Liu ◽  
Wenkai Zhao ◽  
Ying Shi ◽  
Chuan-Lu Yang

The van der Waals heterostructures (vdWHs) create a multi-purpose platform to design unique structures for efficient photovoltaic and optoelectronic applications. In this paper, on the basis of the first-principles calculations,...


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