| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5450230 | Physica E: Low-dimensional Systems and Nanostructures | 2017 | 11 Pages |
Abstract
We report an electro-photo double modulation of the fermi level in a WSe2/graphene heterojunction. The heterojunction exhibits high ION/IOFF ratio (~103) in transfer characteristic in dark and distinct rectification behavior in output characteristic under light illumination, respectively. Time-dependent photoresponse reveals that the heterojunction has a considerable potential in the application of photodetection. Interestingly, an exotic current peak is observed in transfer characteristic under light illumination. This novel behavior is attributed to the tunable fermi level at the WSe2/graphene heterojunction by electro-photo double modulation. The results may be helpful to develop tunable photovoltaic optoelectronics based on van der Waals heterojunctions.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Honghui Sun, Hang Yang, Liang Fang, Jiangwei Zhang, Zhiyuan Wang, Tian Jiang,