Effects of Precursor Concentrations and Thermal Annealing on ZnO Nanorods Grown by Hydrothermal Method

Title
Effects of Precursor Concentrations and Thermal Annealing on ZnO Nanorods Grown by Hydrothermal Method
Author(s)
김종수Min Young Cho[Min Young Cho]Min Su Kim[Min Su Kim]Kwang Gug Yim[Kwang Gug Yim]Dong-Yul Lee[Dong-Yul Lee]Jin Soo Kim[Jin Soo Kim]Jae-Young Leem[Jae-Young Leem]
Keywords
FILMS
Issue Date
201108
Publisher
AMER SCIENTIFIC PUBLISHERS
Citation
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.11, no.8, pp.7479 - 7482
Abstract
ZnO nanorods were grown on spin-coated ZnO seed layers by hydrothermal method. The ZnO nanorods were grown with various precursor concentrations ranging from 0.01 to 0.3 M. Field-emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), and photoluminescence (PL) were carried out to investigate the structural and optical properties of the ZnO nanorods. The average diameter and length of the ZnO nanorods is increased as the precursor concentration increased from 0.01 to 0.3 M. From XRD, the intensity of ZnO (002) peak is increased and full width at half maximum (FWHM) of ZnO (002) decreased as the precursor concentration increased. The FWHM of near-band-edge emission (NBE) decreased and intensity ratio of the NBE to the deep-level emission (DLE) increased as the precursor concentration increased which indicated the optical property is improved. The DLE is red-shifted from yellow-to red-emission and its intensity is increased as the annealing temperature increased due to thermal diffusion process.
URI
http://hdl.handle.net/YU.REPOSITORY/24801http://dx.doi.org/10.1166/jnn.2011.4783
ISSN
1533-4880
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이과대학 > 물리학과 > Articles
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