Journal
NANOTECHNOLOGY
Volume 30, Issue 11, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-6528/aafc0f
Keywords
nonlayered 2D materials; photoelectrochemical photodetector; 2D selenium
Funding
- Science and Technology Development Fund [007/2017/A1, 132/2017/A3]
- Macao SAR, China
- National Natural Science Foundation of China (NSFC) [61435010, 61875138]
- Science and Technology Innovation Commission of Shenzhen [JCYJ20170818093453105]
Ask authors/readers for more resources
Two-dimensional (2D) materials exhibit many interesting properties, but most 2D materials are exfoliated from layered bulk materials, limiting the development of the 2D material group. Recently, non-layered 2D materials have aroused great attention due to their excellent catalysis performance, favored compatibility with silicon substrates and high chemical activity. With high photoconductivity, high responsivity and fast response time, non-layered selenium (Se) exhibits important applications in the field of optoelectronics. In this work, we use a simple liquid phase exfoliation method to fabricate 2D Se nanoflakes from bulk Se which possesses a unique chain structure. The thickness of 2D Se nanoflakes was measured to be in the range of 5-10 nm. As-fabricated Se nanoflakes were used in a photodetector by the photoelectrochemical method, showing a high photocurrent density (1.28 mu A cm(-2)) and photoresponsivity (10.45 mu A W-1). In addition, the long-term photoelectric measurements indicate that the 2D Se-based photodetector has good time and cycle stability. Our results show that 2D Se has promising potential in liquid-based photo-detectors.
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