Title :
Preparation and optical properties of ZnO nanostructures
Author :
Li, Zeming ; Xu, Lingling ; Zhang, Xitian
Author_Institution :
Heilongjiang Key Lab. for Adv. Functional Mater. & Excited State Processes, Harbin Normal Univ., Harbin, China
Abstract :
Zinc oxide nanostructures were directly grown by a low temperature hydrothermal reaction without surfactant, using zinc foils as both source and substrate in NaOH solution. The effect of pH value in solution and growth time on the morphologies and sizes of the nanostructures were investigated. The growth mechanism of the as-synthesized ZnO nanostructures was discussed. Their photoluminescence properties were characterized. There are a intensive ultraviolet light emission peak and weak visible emission band in the photoluminescence spectra of the ZnO nanorods while for the ZnO thin films a strong visible emission band was observed. Their photoluminescence origin is discussed.
Keywords :
II-VI semiconductors; nanofabrication; nanostructured materials; photoluminescence; semiconductor growth; wide band gap semiconductors; zinc compounds; ZnO; intensive ultraviolet light emission peak; low temperature hydrothermal reaction; morphologies; nanorods; nanostructures; optical properties; photoluminescence spectra; strong visible emission band; weak visible emission band; Chemical vapor deposition; Nanostructured materials; Nanostructures; Photoluminescence; Physics; Substrates; Surface morphology; Temperature; X-ray lasers; Zinc oxide;
Conference_Titel :
Nanoelectronics Conference (INEC), 2010 3rd International
Conference_Location :
Hong Kong
Print_ISBN :
978-1-4244-3543-2
Electronic_ISBN :
978-1-4244-3544-9
DOI :
10.1109/INEC.2010.5425110