Formation and identification of secondary oxide phases in co-sputtered ZnO:Cr films

Y. M. Hu, C. W. Hsu, C. Y. Wang, S. S. Lee, J. W. Chiou, T. C. Han, G. J. Chen, Wei-Yang Chou, J. Chang

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

The secondary oxide phases in ZnO:Cr films have been observed to evolve from an initial Cr2O3 phase near the film surface to a final ZnCr2O4 phase throughout the film as the Cr content is increased. Two absorption bands, corresponding to the 4A24 T1 and 4A24 T2 transitions of Cr3+, can be observed in the Cr2O3-rich sample, whereas the ZnCr2O4-rich sample is opaque at wavelengths ≤ 500 nm. Our results suggest that the formation of secondary oxide phases in ZnO:Cr films is inevitable, leading to a much lower solubility of Cr.

Original languageEnglish
Pages (from-to)2916-2919
Number of pages4
JournalThin Solid Films
Volume518
Issue number10
DOIs
Publication statusPublished - 2010 Mar 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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