1. Facile synthesis of ZnS quantum dots at room temperature for ultra-violet photodetector applications.
- Author
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Li, Rujie, Tang, Libin, Zhao, Qing, Teng, Kar Seng, and Lau, Shu Ping
- Subjects
- *
QUANTUM dot synthesis , *ULTRAVIOLET detectors , *PHOTODETECTORS , *QUANTUM dots , *ZINC sulfide , *OPTICAL properties - Abstract
• ZnS QDs was synthesized using a facile method at room temperature. • The monodispersed ZnS QDs with narrow size distribution has been achieved. • ZnS QDs based photodetector with high performance has been fabricated. Zinc sulfide (ZnS) quantum dots (QDs) were synthesized using a facile, low-cost and environmentally friendly method at room temperature and ambient pressure. The structural, optical and electrical properties of the as-prepared ZnS QDs were investigated. The monodispersed crystalline ZnS QDs with an average size of 3.8 nm has been prepared, an absorption peak at 292 nm in the ultra-violet (UV) range was observed. The maximum responsivity (R) and detectivity (D *) of the ZnS QDs based photodetector under 365 nm UV light illumination were 5.8 A W−1 and 1.97 × 1013 Jones, respectively, which shows important potential application in UV detection. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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