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Title: Synthesis and characterization of vertically aligned ZnO nanorods with controlled aspect ratio
Authors: Gayen, R N
Bhar, R
Pal, A K
Keywords: ZnO nanorods;Microstructure;Optical properties;Photoluminescence
Issue Date: Jun-2010
Publisher: CSIR
Abstract: Vertically aligned zinc oxide (ZnO) nanorods with controlled aspect ratio have been deposited by hybrid wet chemical route onto glass substrates with pre-deposited ZnO seeds produced by sputtering a ZnO target in argon plasma. Films have been characterized by measuring microstructural and optical properties. The photoluminescence (PL) spectra have been found to be dominated by the presence of peaks at ~ 394 nm (~3.15 eV) due to the free exciton emission and at ~470 nm (~2.64 eV) due to transitions from deep donor states arising out of oxygen vacancy (VO) located ~0.06 eV below the conduction band to the valance band. Bonding environment has been obtained from Raman and Fourier transformed infrared (FTIR) studies.
Page(s): 385-393
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.48(06) [June 2010]

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