Tunable emission and the systematic study on energy-transfer properties of Ce3+- and Tb3+-co-doped Sr3(PO4)2 phosphors

被引：17

作者：

Liu, Zhijun ^{[1
]}

机构：

[1] Guangzhou Maritime Inst, Dept Shipping Engn, Guangzhou 510006, Guangdong, Peoples R China

来源：

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2015年 / 120卷 / 03期

关键词：

LUMINESCENCE PROPERTIES; EMITTING PHOSPHORS; TB3+; MN2+; PHOTOLUMINESCENCE;

D O I：

10.1007/s00339-015-9258-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An emitting color tunable phosphor Sr-3(PO4)(2):Ce3+, Tb3+ was synthesized by the traditional high-temperature solid-state reaction method. The photoluminescence and energy-transfer (ET) properties of Ce3+- and Tb3+-doped Sr-3(PO4)(2) host were studied in detail. The obtained phosphors show both a blue emission from Ce3+ and a yellowish green emission from Tb3+ with considerable intensity under ultraviolet (UV) excitation (similar to 311 nm). When the content of Ce3+ was fixed at 0.03, the emission chromaticity coordinates could be adjusted from blue to green region by tuning the contents of Tb3+ ions with the aid of ET process. The critical distance between Ce3+ and Tb3+ is 14.69 a"<<. The ET mechanism from Ce3+ to Tb3+ ions was identified with dipole-dipole interaction. The obtained phosphor exhibits a strong excitation in UV spectral region and high-efficient ET from Ce3+ to Tb3+ ions. It may find applications as a green light-emitting UV-convertible phosphor in white LED devices.

引用

页码：933 / 939

页数：7

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