Synthesis of ZnO:Dy Nanopowder and Photoluminescence of Dy3+ in ZnO
来源期刊：JOURNAL OF RARE EARTHS2005年第5期
论文作者：Hu Juntao Guo Changxin Zhao Junjing Zhang Linli
Key words：ZnO:Dy nanopowder; photoluminescence; defect energy; rare earths;
Abstract: A type of dysprosium-doped ZnO (ZnO:Dy) nanopowder was synthesized by high temperature calcinations. XRD was used to analyze the structure. Photoluminescence spectra were used to study the optical characteristic. PL of ZnO:Dy shows two different spectra which are broad band resulted from the defect of Dy in ZnO and sharp lines from the 4f→4f transition of isolated Dy3+ luminescence center. The emission and excitation spectra depend on the excitation wavelength and the concentration of Dy3+. The broad bands with peaks at 600 and 760 nm are attributed to the recombination from an electron of the defect Dy in ZnO to a hole in VB.
Hu Juntao1，Guo Changxin1，Zhao Junjing1，Zhang Linli1
(1.Structure Research Laboratory, University of Science and Technology of China, Hefei 230026, China;
2.Department of Physics, University of Science and Technology of China, Hefei 230026, China)
Abstract:A type of dysprosium-doped ZnO (ZnO:Dy) nanopowder was synthesized by high temperature calcinations. XRD was used to analyze the structure. Photoluminescence spectra were used to study the optical characteristic. PL of ZnO:Dy shows two different spectra which are broad band resulted from the defect of Dy in ZnO and sharp lines from the 4f→4f transition of isolated Dy3+ luminescence center. The emission and excitation spectra depend on the excitation wavelength and the concentration of Dy3+. The broad bands with peaks at 600 and 760 nm are attributed to the recombination from an electron of the defect Dy in ZnO to a hole in VB.
Key words:ZnO:Dy nanopowder; photoluminescence; defect energy; rare earths;
【全文内容正在添加中】
