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Few-layer hexagonal bismuth telluride (Bi2Te3) nanoplates with high-performance UV-Vis photodetection
- Source :
- Nanoscale Advances. 2:1333-1339
- Publication Year :
- 2020
- Publisher :
- Royal Society of Chemistry (RSC), 2020.
-
Abstract
- It is widely known that the excellent intrinsic electronic and optoelectronic advantages of bismuthene and tellurene make them attractive for applications in transistors and logic and optoelectronic devices. However, their poor optoelectronic performances, such as photocurrent density and photoresponsivity, under ambient conditions severely hinder their practical application. To satisfy the demand of high-performance optoelectronic devices and topological insulators, bismuth telluride nanoplates (Bi2Te3 NPs) with different sizes, successfully synthesized by a solvothermal approach have been, for the first time, employed to fabricate a working electrode for photoelectrochemical (PEC)-type photodetection. It is demonstrated that the as-prepared Bi2Te3 NP-based photodetectors exhibit remarkably improved photocurrent density, enhanced photoresponsivity, and faster response time and recovery time in the UV-Vis region, compared to bismuthene and tellurene-based photodetectors. Additionally, the PEC stability measurements show that Bi2Te3 NPs have a comparable long-term stability for on/off switching behaviour for the bismuthene and tellurene-based photodetectors. Therefore, it is anticipated that the present work can provide fundamental acknowledgement of the optoelectronic performance of a PEC-type Bi2Te3 NP-based photodetector, shedding light on new designs of high-performance topological insulator-based optoelectronic devices.
- Subjects :
- Working electrode
Materials science
Photodetector
Bioengineering
02 engineering and technology
Photodetection
010402 general chemistry
01 natural sciences
law.invention
chemistry.chemical_compound
law
General Materials Science
Bismuth telluride
Photocurrent
business.industry
Transistor
General Engineering
Response time
General Chemistry
021001 nanoscience & nanotechnology
Atomic and Molecular Physics, and Optics
0104 chemical sciences
chemistry
Topological insulator
Optoelectronics
0210 nano-technology
business
Subjects
Details
- ISSN :
- 25160230
- Volume :
- 2
- Database :
- OpenAIRE
- Journal :
- Nanoscale Advances
- Accession number :
- edsair.doi...........eb24d6dcf7541f9f59bc455340699940