The valence of rare earth ions in R2MgSi2O7:Eu, Dy (R = Ca, Sr) long-afterglow phosphors

被引：47

作者：

Qi, ZM ^{[1
]}

Shi, CS

Liu, M

Zhou, DF

Luo, XX

Zhang, J

Xie, YN

机构：

[1] Univ Sci & Technol China, Natl Sunchrotron Radiat Lab, Hefei 230029, Peoples R China

[2] Univ Sci & Technol China, Dept Phys, Hefei 230029, Anhui, Peoples R China

[3] Dalin Luming Light Co Ltd, Dalian 116025, Peoples R China

[4] Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China

来源：

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2004年 / 201卷 / 14期

关键词：

D O I：

10.1002/pssa.200406873

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The valence of rare earth ions in R2MgSi2O7: Eu, Dy (R = Ca, Sr) long-afterglow phosphors was studies by L-3 edge X-ray absorption near-edge structure (XANES) spectroscopy and photoluminescence spectroscopy. The results suggest that Eu ions are in a divalent and trivalent mixed-valence state while Dy ions exist in the trivalent state. No monovalent Eu and tetravalent Dy were observed. The applicability of a hole-transferring mechanism of long-afterglow phosphors is discussed. (C) 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：3109 / 3112

页数：4

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