[Influence of different sol-gel system on the luminescence of nanocrystalline ZnO powder].
ZnO nanopowders were prepared by the sol-gel techniques with two kinds of solvent. Microstructure of powder samples was examined by XRD and TEM. The results indicate that the two ZnO samples have the same crystal and energy band structure. Their photoluminescence (PL) spectra in ultraviolet region are analogous, but their photoluminescence (PL) spectra in visible region are different. The reason is that the 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
Xing-tang
XT
Zhang
Zhong-suo
ZS
Zhao
Hui-ling
HL
Li
Yun-cai
YC
Huang
Ya-bin
YB
Du
Zu-liang
ZL
D000465:Algorithms; D005782:Gels; D049449:Luminescence; D046529:Microscopy, Electron, Transmission; D008956:Models, Chemical; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D019904:Polymethyl Methacrylate; D011208:Powders; D013050:Spectrometry, Fluorescence; D014961:X-Ray Diffraction; D015034:Zinc Oxide / Q000737:chemistry*
D005782:Gels; D011208:Powders; D019904:Polymethyl Methacrylate; D015034:Zinc Oxide