Journal
NANO LETTERS
Volume 17, Issue 2, Pages 673-678Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.6b03689
Keywords
MoS2; metal-insulator transition; photocurrent switching; optical phonon scattering; electron-electron scattering
Categories
Funding
- [IBS-R011-D1]
Ask authors/readers for more resources
We achieve switching on/off the photocurrent of monolayer molybdenum disulfide (MoS2) by controlling the metal-insulator transition (MIT). N-type semiconducting MoS2 under a large negative gate bias generates a photocurrent attributed to the increase of excess carriers in the conduction band by optical excitation. However, under a large positive gate bias, a phase shift from semiconducting to metallic MoS2 is caused, and the photocurrent by excess carriers in the conduction band induced by the laser disappears due to enhanced electron-electron scattering. Thus, no photocurrent is detected in metallic MoS2. Our results indicate that the photocurrent of MoS2 controlling the MIT transition by means of gate bias.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available