Broadening emission band of Ba2B2O5: Dy3+ by codoping Ce3+ as sensitizer and its application to white LEDs

被引：15

作者：

Xu, Shuchao ^{[1
]}

Wang, Zhijun ^{[1
]}

Li, Panlai ^{[1
]}

Li, Ting ^{[1
]}

Bai, Qiongyu ^{[1
]}

Yang, Zhiping ^{[1
]}

机构：

[1] Hebei Univ, Coll Phys Sci & Technol, Hebei Key Lab Opt Elect Informat & Mat, Baoding 071002, Peoples R China

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2018年 / 199卷

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Luminescence; Phosphors; EFFICIENT ENERGY-TRANSFER; LUMINESCENCE PROPERTIES; EMITTING PHOSPHOR; CRYSTAL-STRUCTURE;

D O I：

10.1016/j.saa.2018.03.072

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

In order to achieve broad-band white emitting phosphor, Ce3+/Dy3+ codoped Ba2B2O5 were synthesized by a solid-state method, and the luminescence property and energy transfer were discussed in detail. Dy3+ doped Ba2B2O5 shows white emission, and the two narrow peaks which are assigned to the F-4(9/2) -> H-6(15/2) and F-4(9/2) -> H-6(15/2) transitions of Dy3+ ions, respectively. When codoped Ce3+ as sensitizer, the broad-band white emission can be obtained by the energy transfer from Ce3+ to Dy3+ ions in Ba2B2O5, and the mechanism is the dipole dipole interaction. And the CIE coordinates can be tuned from (0.2501, 02323) to (0.3422, 03799) by increase Dy3+ content. The emission peak blue-shift of Ce3+ ions in Ba2B2O5:Ce3+, Dy3+ was observed from the thermal spectra, and the mechanism was analyzed. A white light emitting diodes (LEDs) can be fabricated Ba2B2O5:Ce3+, Dy3+ with 380 nm chip, and the results show that the phosphor may be a potential application in this field. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：228 / 234

页数：7

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