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Formation of ZnO Nanostructures Grown on Si and SiO2 Substrates

Title
Formation of ZnO Nanostructures Grown on Si and SiO2 Substrates
Author
이휘건
Keywords
ZnO Nanorod; Coverage Density; Chemical Bath Deposition; Textured Surface; Surface Morphology; NANORODS; FILMS; DEVICES
Issue Date
2013-10
Publisher
AMER SCIENTIFIC PUBLISHERS, 26650 THE OLD RD, STE 208, VALENCIA, CA 91381-0751 USA
Citation
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 2013, 13(9), P.6264-6268
Abstract
ZnO nanorods are grown on Si-based substrate by chemical bath deposition method in aqueous solution using zinc nitrate hexahydrate. Various substrates having different surface morphology are used to evaluate their effect on growing ZnO nanorods, such as flat Si(100) wafer, small and large textured-Si wafer, porous silicon, flat SiO2 wafer, small and large textured-SiO2 wafer. The length, diameter, geometry, and coverage density of ZnO nanorods are investigated by field-emission scanning electron microscopy and summarized. SiO2 is a preferred substrate for the growth of ZnO nanorods to Si if the surface morphology of substrate is same, and the textured surface has much higher coverage density (>95%) than the flat surface. Each nanorod is vertically grown along the c-axis on the top of each pyramid face for textured substrate, and forms the 3D sea sponge-like ZnO structure. The characteristics of ZnO nanorods grown on various substrates are analyzed by grazing-angle X-ray diffraction (XRD) and photoluminescence (PL) measurements.
URI
http://www.ingentaconnect.com/content/asp/jnn/2013/00000013/00000009/art00061http://hdl.handle.net/20.500.11754/44665
ISSN
1533-4880
DOI
10.1166/jnn.2013.7687
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > CHEMISTRY(화학과) > Articles
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