Annealing effect on the photoluminescence properties of ZnO nanorod array prepared by a PLD-assistant wet chemical method

Journal Article · Sun Nov 14 23:00:00 EST 2010 · Materials Characterization

DOI:https://doi.org/10.1016/J.MATCHAR.2010.08.002· OSTI ID:22066244

Sufeng, Wei ^[1]; Jianshe, Lian ^[2]

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1. Key Lab of Advanced Structural Materials, Ministry of Education, College of Materials Science and Engineering, Changchun University of Technology, Changchun, 130012 (China)
2. Key Lab of Automobile Materials, Ministry of Education, College of Materials Science and Engineering, Jilin University, Nanling campus, Changchun, 130025 (China)

Well-aligned ZnO nanorod arrays were synthesized by a wet chemical method on the glass substrate with ZnO thin film as seed layer prepared by pulsed laser deposition. The effect of annealing temperature on the luminescence characteristics was investigated. As the annealing temperature increased, the photoluminescence properties show a general enhancing tendency. The nanorod array with high ultraviolet emission and negligible visible light emission (designated by the photoluminescence intensity ratio of ultraviolet to visible emission of 66.4) is obtained by annealing the sample at 700 deg. C for 1 h. Based on the results of X-ray photoelectron spectroscopy and photoluminescence spectra, the mechanisms of visible emission were discussed. - Research Highlights: {yields} ZnO nanorod array with good crystallography, low defects concentration and good optical property was obtained after annealed at 700 deg. C for 1 h. {yields} The transition from the conduction band to the O{sub i} level may be responsible for the yellow-green emission. {yields} The yellow emission may originate from the presence of Zn(OH){sub 2} on the surface or the band transition from conduction band to V{sub o}Zn{sub i} level. {yields} The transition from the Zn{sub i} level to the level should produce an orange emission or an orange-red emission.

• OSTI ID: 22066244
• Journal Information: Materials Characterization, Journal Name: Materials Characterization Journal Issue: 11 Vol. 61; ISSN 1044-5803; ISSN MACHEX
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY
ANNEALING
CRYSTAL STRUCTURE
EMISSION SPECTRA
ENERGY BEAM DEPOSITION
LASER RADIATION
LAYERS
NANOSTRUCTURES
OPTICAL PROPERTIES
PHOTOLUMINESCENCE
PULSED IRRADIATION
SUBSTRATES
SURFACES
THIN FILMS
ULTRAVIOLET RADIATION
VISIBLE RADIATION
X-RAY PHOTOELECTRON SPECTROSCOPY
ZINC HYDROXIDES
ZINC OXIDES