Loading...
Please wait, while we are loading the content...
Selective Chemical Vapor Deposition Growth of $WS_{2}/MoS_{2}$ Vertical and Lateral Heterostructures on Gold Foils
| Content Provider | MDPI |
|---|---|
| Author | Wang, Zixuan Xu, Wenshuo Li, Benxuan Hao, Qiaoyan Wu, Di Qi, Dianyu Gan, Haibo Xie, Junpeng Hong, Guo Zhang, Wenjing |
| Copyright Year | 2022 |
| Description | Vertical and lateral heterostructures consisting of atomically layered two-dimensional (2D) materials exhibit intriguing properties, such as efficient charge/energy transfer, high photoresponsivity, and enhanced photocatalytic activities. However, the controlled fabrication of vertical or lateral heterojunctions on metal substrates remains challenging. Herein, we report a facile and controllable method for selective growth of $WS_{2}/MoS_{2}$ vertical or lateral heterojunctions on polycrystalline gold (Au) foil by tuning the gas flow rate of hydrogen $(H_{2}$). We find that lateral growth is favored without $H_{2}$, whereas vertical growth mode can be switched on by introducing 8–10 sccm $H_{2}$. In addition, the areal coverage of the $WS_{2}/MoS_{2}$ vertical heterostructures is tunable in the range of 12–25%. Transmission electron microscopy (TEM) and selected area electron diffraction (SAED) results demonstrate the quality and absence of cross-contamination of the as-grown heterostructures. Furthermore, we investigate the effects of the $H_{2}$ flow rate on the morphology of the heterostructures. These pave the way to develop unprecedented 2D heterostructures towards applications in (opto)electronic devices. |
| Starting Page | 1696 |
| e-ISSN | 20794991 |
| DOI | 10.3390/nano12101696 |
| Journal | Nanomaterials |
| Issue Number | 10 |
| Volume Number | 12 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-05-16 |
| Access Restriction | Open |
| Subject Keyword | Nanomaterials Chemical Vapor Deposition 2d Materials Heterostructures Selective Growth |
| Content Type | Text |
| Resource Type | Article |
