Effects of post-annealing temperature on the properties of ZnO nanorods grown on homogenous seed-layers by using the hydrothermal method

Title
Effects of post-annealing temperature on the properties of ZnO nanorods grown on homogenous seed-layers by using the hydrothermal method
Author(s)
김종수임광국[임광국]김민수[김민수]김소아람[김소아람]임재영[임재영]남기웅[남기웅]전수민[전수민]이동율[이동율]김진수[김진수]이주인[이주인]
Keywords
MOLECULAR-BEAM EPITAXY; SINGLE-CRYSTAL ZNO; OXIDE THIN-FILMS; SOL-GEL METHOD; OPTICAL-PROPERTIES; LUMINESCENCE; MORPHOLOGY; PHOTOLUMINESCENCE; NANOSTRUCTURES; DEPENDENCE
Issue Date
201205
Publisher
KOREAN PHYSICAL SOC
Citation
JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.60, no.10, pp.1605 - 1610
Abstract
ZnO nanorods were grown on Si substrates by using the hydrothermal method; then, they were post-annealed at various temperatures ranging from 573 to 973 K. The effects of post-annealing temperature on the structural and the optical properties were investigated by using scanning electron microscopy (SEM), X-ray diffraction, and photoluminescence (PL). After the post-annealing process, small pores had been formed on the surface of the ZnO nanorods without any change in the shape of the ZnO nanorods. A tensile stress was observed in the as-grown and the post-annealed ZnO nanorods. The PL intensity ratio of the near-band-edge emission (NBE) to the deep-level emission (DLE) was enhanced, and the DLE peak shifted from yellow to orange emission with increasing post-annealing temperature. The activation energy of the post-annealed ZnO nanorods was increased by the post-annealing process.
URI
http://hdl.handle.net/YU.REPOSITORY/28414http://dx.doi.org/10.3938/jkps.60.1605
ISSN
0374-4884
Appears in Collections:
이과대학 > 물리학과 > Articles
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