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High-quality ZnO nanowire arrays directly synthesized from Zn vapor deposition without catalyst

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2011, 21(4), pp.137-146
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering

Tran Van Khai 1 Maneeratanasarn Prachuporn 2 Bonggeun Choi 1 Hyunwoo Kim 1 소대섭 3 Joon Woo Lee 3 No Hyung Park 4 허훈 4 Ngo Trinh Tung 5 함헌 1 Kwang Bo Shim 1

1한양대학교
2Hanyang University
3한국과학기술정보연구원
4한국생산기술연구원
5Vietnam Academy of Science and Technology

Accredited

ABSTRACT

Vertically well-aligned ZnO nanowire (NW) arrays were synthesized directly on GaN/sapphire and Si substrate from Zn vapor deposition without catalysts. Experimental results showed that the number density, diameter, crystallinity and degree of the alignment of ZnO NWs depended strongly on both the substrate position and kind of the substrates used for the growth. The photoluminescence (PL) characteristics of the grown ZnO NW arrays exhibit a strong and sharp ultraviolet (UV) emission at 379 nm and a broad weak emission in the visible range, indicating that the obtained ZnO NWs have a high crystal quality with excellent optical properties. The as-grown ZnO NWs were characterized by using scanning electron microscopy (SEM), high resolution transmission electronic microscopy (HR-TEM), and X-ray diffraction (XRD).

Citation status

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