[Influence of different sol-gel systems on the luminescence of nanocrystalline ZnO powders].
ZnO nanopowders were prepared by the sol-gel techniques with two kinds of solvent. Microstructure of the powdersamples was examined by XRD and TEM. The results indicate that two ZnO samples have the same crystal and energy band structure. Their photolurminescence (PL) spectra in the ultraviolet region are analogous, but their photoluminescence (PL) spectra in the visible region are different. The reason is that two kinds of solvent with different polarity result in the difference in configuration and distribution of the sample surface states in the two systems.
Guo
Shu-xia
SX
Key Laboratory of Special Functional Materials, Henan University, Kaifeng 475001, China.
Zhang
Zhong-suo
ZS
Zhang
Xing-tang
XT
Zhao
Hui-ling
HL
Li
Yun-cai
YC
Huang
Ya-bin
YB
Du
Zu-liang
ZL