Flame-excited luminescence in the oxides Ta2O5, Nb2O5, TiO2, ZnO, and SnO2

被引：44

作者：

Provenzano, PL ^{[1
]}

Jindal, GR ^{[1
]}

Sweet, JR ^{[1
]}

White, WB ^{[1
]}

机构：

[1] Penn State Univ, Mat Res Lab, University Pk, PA 16802 USA

来源：

JOURNAL OF LUMINESCENCE | 2001年 / 92卷 / 04期

关键词：

candoluminescence; oxide phosphors; emission spectra; flame excitation; Nb2O5; Ta2O5; TiO2; SnO2; ZnO;

D O I：

10.1016/S0022-2313(00)00264-7

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The flame-excited emission (candoluminescence) of the oxides Ta2O5, Nb2O5, TiO2, ZnO, and SnO2 have been reexamined. By measuring the emission spectra as a function of temperature in comparison with the optical band gap, also measured as a function of temperature, it is concluded that a portion of the emission, particularly in Ta2O5 and Nb2O5, is non-thermal. The results support the hypothesis that the excess emission is due to recombination of electron-hole pairs created by de-excitation of neutral radicals on the phosphor surface. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：297 / 305

页数：9

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