Morphology and crystal quality investigation of hydrothermally synthesized ZnO micro-rods

Trilochan Sahoo, Suraj Kumar Tripathy, Yeon Tae Yu, Haeng Keun Ahn, Dong Chan Shin, In Hwan Lee

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Micro-structural and room and low temperature photoluminescence response of undoped one-dimensional ZnO were investigated. ZnO rods of different morphology and size were synthesized by controlling growth parameters through hydrothermal technique. The phase and microstructure analysis were carried out by X-ray diffraction and scanning electron microscopy. The room and low temperature photoluminescence spectra of the samples were studied. Near band edge sharp exciton emission peaks and broad defect-related peaks were observed. The ratio of band edge emission to deep level emission was controlled by tuning the initial concentration, pH and reaction time period. Optimal growth condition for growth of micro-rods with improved crystal quality was obtained with initial Zn2+ concentration of 0.5 M, at reaction temperature of 120 °C, pH of 9.9 and in a reaction time period of 6 h.

Original languageEnglish
Pages (from-to)2060-2068
Number of pages9
JournalMaterials Research Bulletin
Volume43
Issue number8-9
DOIs
Publication statusPublished - 2008 Jun 13

Keywords

  • A. Optical materials
  • B. Crystal growth
  • C. Electron microscopy
  • C. X-ray diffraction
  • D. Luminescence

ASJC Scopus subject areas

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

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