ZnO nanowall network grown by chemical vapor deposition technique

Network of wedge shaped ZnO nanowalls are grown on c-sapphire by Chemical Vapor Deposition (CVD) technique. Structural studies using x-ray diffraction show much better crystallinity in the nanowall sample as compared to the continuous film. Moreover, the defect related broad green luminescence is fo...

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Bibliographic Details
Published inAIP conference proceedings Vol. 1665; no. 1
Main Authors Mukherjee, Amrita, Dhar, Subhabrata
Format Conference Proceeding Journal Article
LanguageEnglish
Published Melville American Institute of Physics 24.06.2015
Subjects
CHEMICAL VAPOR DEPOSITION
COMPARATIVE EVALUATIONS
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
CROSS SECTIONS
CRYSTAL STRUCTURE
Electrical resistivity
EMISSION SPECTRA
NANOSTRUCTURES
Organic chemistry
PHOTOLUMINESCENCE
Quantum confinement
REDUCTION
SAPPHIRE
Scattering cross sections
X-RAY DIFFRACTION
Zinc oxide
ZINC OXIDES
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Summary:Network of wedge shaped ZnO nanowalls are grown on c-sapphire by Chemical Vapor Deposition (CVD) technique. Structural studies using x-ray diffraction show much better crystallinity in the nanowall sample as compared to the continuous film. Moreover, the defect related broad green luminescence is found to be suppressed in the nanowall sample. The low temperature photoluminescence study also suggests the quantum confinement of carriers in nanowall sample. Electrical studies performed on the nanowalls show higher conductivity, which has been explained in terms of the reduction of scattering cross-section as a result of 1D quantum confinement of carriers on the tip of the nanowalls.
Bibliography:ObjectType-Conference Proceeding-1
SourceType-Conference Papers & Proceedings-1
content type line 21
ISSN:0094-243X
1551-7616
DOI:10.1063/1.4917825