PHOTOLUMINESCENCE OF EU-2+ ION DOPED INTO CA1-XSRXF2 MIXED-CRYSTALS

被引：14

作者：

KAWANO, K

TOMINAGA, J

SATOH, H

NAKATA, R

SUMITA, M

机构：

[1] The University of Electro-Communications, Choju-shi, Tokyo

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS | 1990年 / 29卷 / 02期

关键词：

Ca[!sub]1-x[!/sub]Sr[!sub]x[!/sub]F[!sub]2[!/sub]mixed crystals; Electronphonon; Eu[!sup]2+[!/sup; Interaction; Linewidth; Photoluminescence; Quantum efficiency;

D O I：

10.1143/JJAP.29.L319

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The spectral peak, linewidth and quantum efficiency of the luminescence band of Eu2+(4f65d) ions in Ca1-xSFxF2mixed crystals were studied for different x-values. With increasing x, the absorption peak shifted linearly to that of SrF2:Eu2+, while the luminescence peak varied in a parabolic manner with a minimum around x=0.5. In addition, the half-width broadened remarkably, and the activation energy for the nonradiative relaxation was minimized down to 0.4 eV. The temperature dependences of the half-width and the quantum efficiency agreed well with the calculated results on the basis of electron-phonon interaction. © 1990 IOP Publishing Ltd.

引用

页码：L319 / L321

页数：3