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Post-annealing effects on structural and optical properties of a-axis oriented ZnO nanorods

  • Min Su Kim
  • , Kwang Gug Yim
  • , Min Young Cho
  • , Soaram Kim
  • , Giwoong Nam
  • , Dong Yul Lee
  • , Jin Soo Kim
  • , Jong Su Kim
  • , Jeong Sik Son
  • , Joo In Lee
  • , Jae Young Leem*
  • *Corresponding author for this work
  • Inje University
  • Samsung
  • Yeungnam University
  • Kyungwoon University
  • Korea Research Institute of Standards and Science

Research output: Contribution to conferenceConference paperpeer-review

Abstract

ZnO nanorods with a-axis orientation on Si (100) substrate were grown by hydrothermal method and then post-annealing process was carried out at various temperatures ranging from 500 to 900°C in vacuum. Atomic force microscopy (AFM), scanning electron microscopy (SEM), X-ray diffraction (XRD), and photoluminescence (PL) were carried out to investigate the structural and optical properties of the ZnO nanorods. XRD pattern of the ZnO nanorods exhibits three diffraction peaks a 31.84°, 34.48°, and 66.43°, corresponding to ZnO (100), (002), and (200), respectively. The texture coefficient (TC) ratio of a-axis to c-axis is increased as the annealing temperature is increased. The residual tensile stress of the ZnO nanorods is increased and the bond length is slightly decreased with increase in the annealing temperature. The near-band-edge emission (NBE) of the ZnO nanorods is blue- shifted by the annealing process.

Original languageEnglish
Title of host publicationInternational Congress on Advances in Applied Physics and Materials Science, APMAS2011
Pages443-448
Number of pages6
DOIs
StatePublished - 2011
Event1st International Congress on Advances in Applied Physics and Materials Science, APMAS2011 - Antalya, Turkey
Duration: 2011.05.122011.05.15

Publication series

NameAIP Conference Proceedings
Volume1400
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference1st International Congress on Advances in Applied Physics and Materials Science, APMAS2011
Country/TerritoryTurkey
CityAntalya
Period11.05.1211.05.15

Keywords

  • Hydrothermal
  • Nanorod
  • Photoluminescence
  • Scanning Electron Microscopy
  • X-ray Diffraction
  • Zinc Oxide

Quacquarelli Symonds(QS) Subject Topics

  • Physics & Astronomy

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