Catalyst/dopant-free growth of ZnO nanobelts with different optical properties from nanowires grown via a catalyst-assisted method

B. Q. Cao, Z. M. Liu, H. Y. Xu, H. B. Gong, D. Nakamura, K. Sakai, M. Higashihata, T. Okada

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The paper reported a simple but effective gold catalyst-tailored chemical vapour deposition (CVD) method to grow ZnO nanowires and nanobelts with different photoluminescence (PL) behaviours. ZnO nanowires along the c-axis were synthesized via a gold catalyst-assisted CVD method through the conventional vapour-liquid-solid (VLS) mechanism. But, ZnO nanobelts grew along the a-axis enclosed with {0110} and {0001} base planes without using any catalyst or dopant through the vapour-solid (VS) mechanism. The nanowires and nanobelts were proved to be of different optical quality, which was related with their growth process. Besides the different origin of the near-band-gap emission at room temperature, laser emission was only observed from ZnO nanobelts while the nanowires show anomalous photoluminescence behaviour under higher excitation density.

Original languageEnglish
Pages (from-to)4282-4287
Number of pages6
JournalCrystEngComm
Volume13
Issue number12
DOIs
Publication statusPublished - Jun 21 2011

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Nanobelts
Nanowires
nanowires
Optical properties
Doping (additives)
optical properties
catalysts
Catalysts
Gold
Chemical vapor deposition
Photoluminescence
Vapors
vapor deposition
vapors
gold
photoluminescence
Energy gap
Lasers
Liquids
room temperature

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Catalyst/dopant-free growth of ZnO nanobelts with different optical properties from nanowires grown via a catalyst-assisted method. / Cao, B. Q.; Liu, Z. M.; Xu, H. Y.; Gong, H. B.; Nakamura, D.; Sakai, K.; Higashihata, M.; Okada, T.

In: CrystEngComm, Vol. 13, No. 12, 21.06.2011, p. 4282-4287.

Research output: Contribution to journalArticle

Cao, B. Q. ; Liu, Z. M. ; Xu, H. Y. ; Gong, H. B. ; Nakamura, D. ; Sakai, K. ; Higashihata, M. ; Okada, T. / Catalyst/dopant-free growth of ZnO nanobelts with different optical properties from nanowires grown via a catalyst-assisted method. In: CrystEngComm. 2011 ; Vol. 13, No. 12. pp. 4282-4287.
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AU - Higashihata, M.

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