Facile synthesis of ZnS quantum dots at room temperature for ultra-violet photodetector applications

Rujie Li, Libin Tang, Qing Zhao, Kar Seng Teng, Shu Ping Lau

Research output: Journal article publicationJournal articleAcademic researchpeer-review

3 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number137127
JournalChemical Physics Letters
Volume742
DOIs
Publication statusPublished - Mar 2020

Keywords

  • Optical property photodetector
  • Quantum dots (QDs)
  • Semiconductor
  • Zinc sulfide (ZnS)

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this