Synthesis and Optical Properties of ZnO Nanostructures

Chin. Phys. Lett.

2005, Vol. 22

Issue (8): 2084-2087 DOI:

Original Articles

Synthesis and Optical Properties of ZnO Nanostructures

WANG Duo-Fa;LIAO Lei;LI Jin-Chai;FU Qiang;PENG Ming-Zeng;ZHOU Jun-Ming

¹Department of Physics, Wuhan University, Wuhan 430072 ²Center for Electron Microscopy and Center of Nanoscience and Nanotechnology Research, Wuhan University, Wuhan 430072 ³Institute of Physics, Chinese Academy of Sciences, Beijing 100080

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WANG Duo-Fa, LIAO Lei, LI Jin-Chai et al 2005 Chin. Phys. Lett. 22 2084-2087

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Abstract ZnO nanostructures with different morphologies were fabricated by changing the partial oxygen pressure. The structures, morphologies and optical properties of ZnO nanostructures were investigated by x-ray diffraction, field emission scanning electron microscopy and photoluminescence (PL) spectra at room temperature. All the samples show preferred orientation along the c-axis. The oxygen partial pressure and the annealing atmosphere have important effect on the PL property of ZnO nanostructures. The high oxygen partial pressure during growth of samples and high-temperature annealing of the ZnO samples in oxygen can increase oxygen vacancies and can especially increase antisite oxygen (Oz_n) defects, which degraded the near band-edge emission. However, the annealing in H₂ can significantly modify the NBE emission.

Keywords: 78.55.Et 78.67.Lt 81.05.Dz

Published: 01 August 2005

PACS:	78.55.Et	(II-VI semiconductors)
	78.67.Lt	(Quantum wires)
	81.05.Dz	(II-VI semiconductors)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2005/V22/I8/02084

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	WANG Duo-Fa
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