In:
Materials Science Forum, Trans Tech Publications, Ltd., Vol. 486-487 ( 2005-6), p. 221-224
Abstract:
ZnO nanopowders with an average grain size of 30nm were prepared by a solution combustion method with various sintering temperatures (100-1000o C). The optical properties of the ZnO nanopowders were investigated in the temperature range of 14-150K in air. Based on the results of XRD, Photoluminescence, and excitation spectra, the ZnO powders showed wurtzite single phase with UV-blue light emitting. Deep level defects such as oxygen vacancies and Zn interstitials were not observed from the ZnO powders sintered up to 700 o C. However, these defects were observed as the sintering temperature was increased up to 900 o C. This seems to be due to the generation of oxygen vacancies and zinc interstitials. Furthermore, the blue light intensity was doubled when the synthesized ZnO powders were sintered at 700 o C. This might be very useful for high efficiency photocatalysts and the blue light emitting phosphors of displays such as field emission displays and plasma display panels.
Type of Medium:
Online Resource
ISSN:
1662-9752
DOI:
10.4028/www.scientific.net/MSF.486-487
DOI:
10.4028/www.scientific.net/MSF.486-487.221
Language:
Unknown
Publisher:
Trans Tech Publications, Ltd.
Publication Date:
2005
detail.hit.zdb_id:
2047372-2
