Preparation and photoelectric properties of SnOx films with tunable optical bandgap

Fang Wang, Menghan Jia, Libin Tang, Chong Wang, Jinzhong Xiang, Kar Seng Teng, Shu Ping Lau

Research output: Journal article publicationJournal articleAcademic researchpeer-review

1 Citation (Scopus)

Abstract

SnOx thin films with tunable optical bandgap were prepared using RF magnetron sputtering. The bandgap was adjustable between 2.16 and 3.96 eV depending on oxygen partial pressure during deposition and heat treatment. The structure and properties of the SnOx films were studied. The optical absorption of the SnOx films covered multiple ultraviolet bands, such as UVA, UVB and UVC. A photodetector based on the annealed SnOx film exhibited a detectivity of 1 × 1011 Jones (under 365 nm UV light) at room temperature, which demonstrates the important potential application of SnOx films for UV detection.

Original languageEnglish
Article number137039
JournalChemical Physics Letters
Volume739
DOIs
Publication statusPublished - Jan 2020

Keywords

  • Oxygen partial pressure
  • SnO
  • Tunable optical band gap
  • Ultraviolet detection

ASJC Scopus subject areas

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

Cite this