Elaboration and characterization of transparent GdTaO4:Tb3+ thick films fabricated by sol-gel process

被引：12

作者：

Gu, Mu ^{[1
]}

Zhu, Liping ^{[1
]}

Liu, Xiaolin ^{[1
]}

Huang, Shiming ^{[1
]}

Liu, Bo ^{[1
]}

Ni, Chen ^{[1
]}

机构：

[1] Tongji Univ, Shanghai Key Lab Special Artificial Microstruct M, Dept Phys, Shanghai 200092, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2010年 / 501卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Thick films; Sol-gel processes; Optical properties; Luminescence; LUMINESCENCE PROPERTIES; X-RAY; CRACK-FREE; M' TYPE;

D O I：

10.1016/j.jallcom.2010.04.109

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Transparent GdTaO4:Th3+ polycrystalline thick films have been successfully synthesized using sot-gel technique. The critical thickness of the film was 760 nm and the surface was crack-free and smooth The thick film particle size was 25 nm and the powder particle size was over micron In comparison with the thick film phosphors, the charge transfer transition of TaO4 group and the excitation peak of Tb3+ center shifted from 223 to 215 nm and 245 to 255 nm for powder sample, respectively. The higher energy level of the charge transfer indicated the decrease of the covalency of the Ta-O bond in the powder phosphor The red shift of the 4f-5d excitation band might be attributed to the quantum confinement of Tb3+ in the film phosphor. The decay times of GdTaO4:Th3+ thick film and powder phosphors were 0.79 and 1 02 ms, respectively (C) 2010 Elsevier B V All rights reserved

引用

页码：371 / 374

页数：4

共 21 条

[1]

Blasse G., 1970, Journal of Luminescence, V3, P109, DOI 10.1016/0022-2313(70)90011-6

[2] ON THE STRUCTURAL AND LUMINESCENT PROPERTIES OF THE M'LNTAO4 RARE-EARTH TANTALATES [J].