Luminescence properties of NaGd(PO3)4:Eu3+ and energy transfer from Gd3+ to Eu3+

被引：65

作者：

Zhong, J. ^{[1
]}

Liang, H. ^{[1
]}

Su, Q. ^{[1
]}

Zhou, J. ^{[1
]}

Huang, Y. ^{[2
]}

Gao, Z. ^{[2
]}

Tao, Y. ^{[2
]}

Wang, J. ^{[3
]}

机构：

[1] Sun Yat Sen Univ, State Key Lab Optoelect Mat & Technol, MOE Lab Bioinorgan & Synthet Chem, Sch Chem & Chem Engn, Guangzhou 510275, Guangdong, Peoples R China

[2] Chinese Acad Sci, Inst High Energy Phys, Lab Beijing Synchrotron Radiat, Beijing 100039, Peoples R China

[3] Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Peoples R China

来源：

APPLIED PHYSICS B-LASERS AND OPTICS | 2010年 / 98卷 / 01期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

CRYSTAL-STRUCTURE; PHOSPHOR; SPECTROSCOPY; EFFICIENCY; GROWTH;

D O I：

10.1007/s00340-009-3673-y

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The luminescence properties of polyphosphates NaEu (x) Gd(1-x)(PO3)(4) (x = 0-1.00) and the energy transfer from Gd3+ to Eu3+ were studied. In undoped NaGd(PO3)(4) sample, the photon cascade emission of Gd3+ was observed under S-8(7/2) -> (6)G(J) excitation (201 nm) in which the emission of a red photon due to (6)G(J) -> P-6(J) transition is followed by an ultraviolet photon emission due to P-6(J) -> S-8(7/2) transition. When part of Gd3+ ions in the host NaGd(PO3)(4) were substituted by Eu3+ ions, the NaGd(PO3)(4):Eu3+ sample showed intensive red emission under 172-nm vacuum-ultraviolet (VUV) excitation which is suitable for mercury-free fluorescent lamps and plasma display panel applications. Based on the VUV-visible spectroscopic characteristics and the luminescence decay properties of NaGd(PO3)(4):Eu3+, it was found that the quantum cutting by a two-step energy transfer from Gd3+ to Eu3+ can improve the red emission of Eu3+ ions under VUV excitation but only a part of the excitation energy in the excited P-6(J) states within Gd3+ ions can be transferred to Eu3+ ions for its red emission, and the nonradiative energy transfer efficiencies from the excited P-6(J) states within Gd3+ to Eu3+ were calculated.

引用

页码：139 / 147

页数：9

共 22 条

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