Synthesis and phosphorescence mechanism of a reddish orange emissive long afterglow phosphor Sm3+-doped Ca2SnO4

被引：66

作者：

Ju, Zhenghua ^{[1
,2
]}

Wei, Ruiping ^{[1
,2
]}

Zheng, Jiangrong ^{[1
,2
]}

Gao, Xiuping ^{[1
,2
,3
]}

Zhang, Shuihe ^{[3
]}

Liu, Weisheng ^{[1
,2
]}

机构：

[1] Lanzhou Univ, Coll Chem & Chem Engn, Key Lab Nonferrous Met Chem & Resources Utilizat, Lanzhou 730000, Peoples R China

[2] Lanzhou Univ, Coll Chem & Chem Engn, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China

[3] Lanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2011年 / 98卷 / 12期

基金：

中国国家自然科学基金;

关键词：

LASTING PHOSPHORESCENCE; ALUMINOSILICATE GLASSES; ENERGY-TRANSFER; LUMINESCENCE; SCINTILLATORS; DY3+; IONS;

D O I：

10.1063/1.3567511

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A reddish orange emissive long afterglow phosphor Ca2SnO4:Sm3+ was prepared by solid-state reaction in air atmosphere and characterized by photoluminescence, long-lasting phosphoresce. The afterglow time is more than 7 h which is the longest red or reddish orange long afterglow phosphor at the present time. The phosphorescence mechanism of the long afterglow phosphor was studied by thermoluminescence and positron annihilation lifetime experiments. The defects V-Ca '', structure defects Sn3+ and Sn2+ may act as hole trapping centers while the defects Sm-Ca(center dot) may act as electron trapping centers, and trapping centers play an essential role for photoenergy storage in persistent phosphors. (C) 2011 American Institute of Physics. [doi:10.1063/1.3567511]

引用

页数：3

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