Frequency Shifts of Luminescence for ZnO Nanoparticles in Porous Alumina Template
来源期刊：JOURNAL OF RARE EARTHS2006年增刊第1期
论文作者：Ruan Yongfeng Lu Shuhua Jing Hongqi Huang Boxian Zhan Shouchao
Key words：ZnO; sol-gel; porous alumina templates; ZnO/PAA composite system;
Abstract: ZnO nanoparticles in porous anodized alumina were fabricated by sol-gel method. The PL spectra of pure ZnO nanoparticles, porous alumina template and the ZnO/PAA composite system were investigated after annealed at different temperatures. The annealing of ZnO/PAA composite system displays very complicated behavior, where changing of luminescence intensity and a "red shift" of emission frequency were observed at less or higher than 500 ℃ of the annealing temperature, respectively. To explain the phenomenon, it is considered that the emission origin of the green luminescence of ZnO nanoparticles came from OZn. It is suggested that the ZnO/PAA composite system should be annealed at the temperature above 500 ℃ in order to get intense luminescence of ZnO nanoparticle.
Ruan Yongfeng1，Lu Shuhua1，Jing Hongqi1，Huang Boxian2，Zhan Shouchao1
(1.School of Science, Tianjin University, Tianjin 300072, China;
2.School of Science, Tianjin Industry University, Tianjin 300160, China)
Abstract:ZnO nanoparticles in porous anodized alumina were fabricated by sol-gel method. The PL spectra of pure ZnO nanoparticles, porous alumina template and the ZnO/PAA composite system were investigated after annealed at different temperatures. The annealing of ZnO/PAA composite system displays very complicated behavior, where changing of luminescence intensity and a "red shift" of emission frequency were observed at less or higher than 500 ℃ of the annealing temperature, respectively. To explain the phenomenon, it is considered that the emission origin of the green luminescence of ZnO nanoparticles came from OZn. It is suggested that the ZnO/PAA composite system should be annealed at the temperature above 500 ℃ in order to get intense luminescence of ZnO nanoparticle.
Key words:ZnO; sol-gel; porous alumina templates; ZnO/PAA composite system;
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