Vacuum ultraviolet and visible spectra of ZnO:Eu3+ prepared by combustion synthesis

被引：29

作者：

Cheng, Bing-Ming ^{[2
]}

Yu, Lixin ^{[1
]}

Duan, Chang-kui ^{[1
]}

Wang, Huaishan ^{[1
]}

Tanner, Peter A. ^{[1
]}

机构：

[1] City Univ Hong Kong, Dept Biol & Chem, Kowloon, Hong Kong, Peoples R China

[2] Natl Synchrotron Radiat Res Ctr, Hsinchu, Taiwan

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2008年 / 20卷 / 34期

关键词：

D O I：

10.1088/0953-8984/20/34/345231

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Zinc oxide doped with 1 at.% Eu3+ has been prepared by combustion synthesis using several different reductants. Samples sintered at 800 degrees C were similar to 30 nm in size and Fourier transform IR spectra demonstrated that they were relatively free of contaminants. Ultraviolet and near-ultraviolet laser excited emission spectra showed that Eu3+ ions are disordered and not situated at discrete lattice sites in ZnO and consequently no evidence for energy transfer from the host to Eu3+ was found. Vacuum ultraviolet (VUV) excitation produced defect site emission in addition to near-band-edge emission but the intensity of the Eu3+ visible emission was very weak. Bands between 6.2 and 9.1 eV in the VUV excitation spectra have been assigned to electric dipole allowed transitions, 3d-4p.

引用

页数：4

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