Effects of processing parameters on ultraviolet emission of In-doped ZnO nanodisks grown by carbothermal reduction

Po Fan Lin, Chih Yuan Ko, Wen Tai Lin, C. T. Lee

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

Effects of cooling rate and oxygen partial pressure in flowing Ar on ultraviolet (UV) emission of In-doped ZnO nanodisks grown by carbothermal reduction at 1000 °C were studied. The In doping favored the growth of ZnO nanodisks instead of ZnO nanowires. Air-cooled ZnO nanodisks showed a strong green emission, while furnace cooling in conjunction with introducing O2, around 1.0%, into flowing Ar during growth significantly enhanced the growth and UV emission of ZnO nanodisks. The causes can be attributed to the reduction of oxygen vacancies and surface defects in ZnO nanodisks. However, higher oxygen partial pressure in flowing Ar resulted in a decrease in the Zn vapor and thus suppressed the growth and UV emission of ZnO nanodisks.

Original languageEnglish
Pages (from-to)1767-1770
Number of pages4
JournalMaterials Letters
Volume61
Issue number8-9
DOIs
Publication statusPublished - 2007 Apr 1

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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