Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Tubular-shaped ZnO Crystals by Thermal Evaporation Technique in Air

공기 중에서 열증발법에 의하여 제작된 튜브 형상의 ZnO 결정

  • Lee, Jung-Hun (Department of Materials & Components Engineering, Dongeui University) ;
  • Lee, Geun-Hyoung (Department of Materials & Components Engineering, Dongeui University) ;
  • Nahm, Choon-Woo (Department of Electrical Engineering, Dongeui University)
  • 이정헌 (동의대학교 융합부품공학과) ;
  • 이근형 (동의대학교 융합부품공학과) ;
  • 남춘우 (동의대학교 전기공학과)
  • Received : 2014.02.05
  • Accepted : 2014.02.24
  • Published : 2014.03.01
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Abstract

Tubular-shaped ZnO crystals were synthesized by thermal evaporation technique under air atmosphere. Mixture of Zn and Mg powder was used as the source material. The thermal evaporation and oxidation of Zn/Mg mixture were carried out for 1 hr at $1,000^{\circ}C$ and $1,200^{\circ}C$ under in air under atmospheric pressure. When only Zn powder was used as a source material, tetrapod-shaped ZnO crystals were synthesized. This provides that Mg played a key role in the formation of the tubular-shaped crystals. SEM images showed that the tubular-shaped ZnO crystals grew along [0001] direction. XRD spectrum revealed that the ZnO tubes had hexagonal wurtzite structure. Two emission peaks at 380 nm and 510 nm were observed in the room temperature cathodoluminescence spectrum.

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References

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