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Title: Fabrication and characterization of tetrapod-like ZnO nanostructures prepared by catalyst-free thermal evaporation

Abstract

Tetrapod-like ZnO nanostructures were fabricated on ZnO-coated sapphire (001) substrates by two steps: pulsed laser deposition (PLD) and catalyst-free thermal evaporation process. First, the ZnO films were pre-deposited on sapphire (001) substrates by PLD. Then the ZnO nanostructures grew on ZnO-coated sapphire (001) substrate by the simple thermal evaporation of the metallic zinc powder at 900 deg. C in the air without any catalysts. The pre-deposited ZnO films by PLD on the substrates can provide growing sites for the ZnO nanostructures. The as-synthesized ZnO nanostructures were characterized by using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM) and Fourier transform infrared spectrum (FTIR). The results show that the tetrapod-like ZnO nanostructures are highly crystalline with the wurtzite hexagonal structure. Photoluminescence (PL) spectrum of as-synthesized nanostructures exhibits a UV emission peak at {approx} 389 nm and a broad green emission peak at {approx} 513 nm. In addition, the growth mechanism of ZnO nanostructures is also briefly discussed.

Authors:
 [1]; ; ; ;  [1]
  1. College of Physics and Electronics, Shandong Normal University, Jinan 250014 (China)
Publication Date:
OSTI Identifier:
22066176
Resource Type:
Journal Article
Journal Name:
Materials Characterization
Additional Journal Information:
Journal Volume: 61; Journal Issue: 1; Other Information: Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1044-5803
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; CATALYSTS; CRYSTAL GROWTH; ENERGY BEAM DEPOSITION; EVAPORATION; FABRICATION; FOURIER TRANSFORMATION; INFRARED SPECTRA; LASER RADIATION; NANOSTRUCTURES; PHOTOLUMINESCENCE; PULSED IRRADIATION; SAPPHIRE; SCANNING ELECTRON MICROSCOPY; SUBSTRATES; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION; ZINC; ZINC OXIDES

Citation Formats

Libing, Feng, Liu Aihua, E-mail: lah1120@gmail.com, Mei, Liu, Yuying, Ma, Jing, Wei, and Baoyuan, Man. Fabrication and characterization of tetrapod-like ZnO nanostructures prepared by catalyst-free thermal evaporation. United States: N. p., 2010. Web. doi:10.1016/J.MATCHAR.2009.10.011.
Libing, Feng, Liu Aihua, E-mail: lah1120@gmail.com, Mei, Liu, Yuying, Ma, Jing, Wei, & Baoyuan, Man. Fabrication and characterization of tetrapod-like ZnO nanostructures prepared by catalyst-free thermal evaporation. United States. doi:10.1016/J.MATCHAR.2009.10.011.
Libing, Feng, Liu Aihua, E-mail: lah1120@gmail.com, Mei, Liu, Yuying, Ma, Jing, Wei, and Baoyuan, Man. Fri . "Fabrication and characterization of tetrapod-like ZnO nanostructures prepared by catalyst-free thermal evaporation". United States. doi:10.1016/J.MATCHAR.2009.10.011.
@article{osti_22066176,
title = {Fabrication and characterization of tetrapod-like ZnO nanostructures prepared by catalyst-free thermal evaporation},
author = {Libing, Feng and Liu Aihua, E-mail: lah1120@gmail.com and Mei, Liu and Yuying, Ma and Jing, Wei and Baoyuan, Man},
abstractNote = {Tetrapod-like ZnO nanostructures were fabricated on ZnO-coated sapphire (001) substrates by two steps: pulsed laser deposition (PLD) and catalyst-free thermal evaporation process. First, the ZnO films were pre-deposited on sapphire (001) substrates by PLD. Then the ZnO nanostructures grew on ZnO-coated sapphire (001) substrate by the simple thermal evaporation of the metallic zinc powder at 900 deg. C in the air without any catalysts. The pre-deposited ZnO films by PLD on the substrates can provide growing sites for the ZnO nanostructures. The as-synthesized ZnO nanostructures were characterized by using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM) and Fourier transform infrared spectrum (FTIR). The results show that the tetrapod-like ZnO nanostructures are highly crystalline with the wurtzite hexagonal structure. Photoluminescence (PL) spectrum of as-synthesized nanostructures exhibits a UV emission peak at {approx} 389 nm and a broad green emission peak at {approx} 513 nm. In addition, the growth mechanism of ZnO nanostructures is also briefly discussed.},
doi = {10.1016/J.MATCHAR.2009.10.011},
journal = {Materials Characterization},
issn = {1044-5803},
number = 1,
volume = 61,
place = {United States},
year = {2010},
month = {1}
}