Back to Search
Start Over
Solar-blind deep-ultraviolet photodetectors based on solution-synthesized quasi-2D Te nanosheets
- Source :
- Nanophotonics, Vol 9, Iss 8, Pp 2459-2466 (2020)
- Publication Year :
- 2020
- Publisher :
- De Gruyter, 2020.
-
Abstract
- Solar-blind deep ultraviolet (DUV) photodetectors with high responsivity (R) and fast response speed are crucial for practical applications in astrophysical analysis, environmental pollution monitoring, and communication. Recently, 2D tellurium has emerged as a potential optoelectronic material because of its excellent photoelectric properties. In this study, solar-blind DUV photodetectors are demonstrated based on solution-synthesized and air-stable quasi-2D Te nanosheets (Te NSs). An R of 6.5 × 104 A/W at 261 nm and an external quantum efficiency (EQE) of higher than 2.26 × 106% were obtained, which are highest among most other 2D material-based solar-blind DUV photodetectors. Moreover, the photoelectric performance of the quasi-2D Te-based photodetector exhibited good stability even after ambient exposure for 90 days without any encapsulation. These results indicate that quasi-2D Te NSs provide a viable approach for developing solar-blind DUV photodetectors with ultrahigh R and EQE.
- Subjects :
- Materials science
business.industry
Physics
QC1-999
Photodetector
fet
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
medicine.disease_cause
01 natural sciences
solar-blind deep ultraviolet
Atomic and Molecular Physics, and Optics
quasi-2d te nanosheets
0104 chemical sciences
Electronic, Optical and Magnetic Materials
Nanomaterials
medicine
Optoelectronics
Electrical and Electronic Engineering
photodetector
0210 nano-technology
business
Ultraviolet
Biotechnology
Subjects
Details
- Language :
- English
- ISSN :
- 21928614 and 21928606
- Volume :
- 9
- Issue :
- 8
- Database :
- OpenAIRE
- Journal :
- Nanophotonics
- Accession number :
- edsair.doi.dedup.....365f876adb964ced7f35c0b46f2a0a10