Cathodoluminescence of rare-earth-doped zinc aluminate films

被引：137

作者：

Lou, ZD ^{[1
]}

Hao, JH

机构：

[1] Univ Guelph, Dept Phys, Guelph, ON N1G 2W1, Canada

[2] Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China

[3] Univ Guelph, Dept Chem, Thin Film Semicond Lab, Guelph, ON N1G 2W1, Canada

来源：

THIN SOLID FILMS | 2004年 / 450卷 / 02期

基金：

加拿大自然科学与工程研究理事会;

关键词：

pyrolysis; deposition process; field emission; luminescence;

D O I：

10.1016/j.tsf.2003.11.294

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Eu-, Tb-, and Tm-doped zinc aluminate (ZnAl2O4) thin film phosphors were prepared by the spray pyrolysis technique at an ambient pressure. The effects of preparation conditions on the cathodoluminescence properties of the films were studied. Films containing Tb3+ and Tm3+ ions exhibited green and blue cathodoluminescence, respectively. For films doped with europium, both red emission lines from Eu3+ and a broad blue-green emission band from Eu2+ were observed. The CIE (Commission Internationale de L'Eclairage) chromatic coordinates, dominant wavelength, and color purity were deter-mined for each phosphor. The luminance and efficiency of these phosphors at a current density of 57 muA/cm(2) are found to be linearly dependent on the excitation voltage. (C) 2003 Elsevier B.V. All rights reserved.

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页码：334 / 340

页数：7

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