Luminescent materials based on thin metal oxide films doped with rare earth ions

被引：15

作者：

Kanarjov, P. ^{[1
]}

Reedo, V. ^{[1
]}

Acik, I. Oja ^{[2
]}

Matisen, L. ^{[1
]}

Vorobjov, A. ^{[1
]}

Kiisk, V. ^{[1
]}

Krunks, M. ^{[2
]}

Sildos, I. ^{[1
]}

机构：

[1] Univ Tartu, Inst Phys, EE-51014 Tartu, Estonia

[2] Tallinn Univ Technol, Dept Mat Sci, EE-19086 Tallinn, Estonia

来源：

PHYSICS OF THE SOLID STATE | 2008年 / 50卷 / 09期

关键词：

D O I：

10.1134/S1063783408090278

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Luminescent films of TiO2: Sm were prepared by the sol-gel method using the spray pyrolysis technique. Various techniques (including IR absorption, Raman, AFM, XPS, photoluminescence) were used to characterize the samples. After a thermal treatment up to 750 degrees C, intense Sm3+ luminescence with a well-resolved fine structure was observed under optical excitation within the fundamental absorption band of the TiO2 host. After further thermal treatments up to 950 degrees C, the luminescence was quenched, although no anatase-to-rutile phase transformation was observed. This behavior is attributed to nanocrystallinity and segregation of Sm ions in the surface layer.

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收藏

页码：1727 / 1730

页数：4

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