Color tunable single-phase Eu2+ and Ce3+ co-activated Sr2LiAlO4 phosphors

被引：28

作者：

Ha, Jungmin ^{[1
]}

Kim, Yoon Hwa ^{[2
]}

Novitskaya, Ekaterina ^{[3
]}

Wang, Zhenbin ^{[4
]}

Sanchez, Maritza ^{[1
]}

Graeve, Olivia A. ^{[1
,3
]}

Ong, Shyue Ping ^{[4
]}

Im, Won Bin ^{[2
]}

McKittrick, Joanna ^{[1
,3
]}

机构：

[1] Univ Calif San Diego, Mat Sci & Engn Program, 9500 Gilman Dr, La Jolla, CA 92093 USA

[2] Chonnam Natl Univ, Sch Mat Sci & Engn, 77 Yongbong Ro, Gwangju 61186, South Korea

[3] Univ Calif San Diego, Dept Mech & Aerosp Engn, 9500 Gilman Dr, La Jolla, CA 92093 USA

[4] Univ Calif San Diego, Dept Nanoengn, 9500 Gilman Dr, La Jolla, CA 92093 USA

来源：

JOURNAL OF MATERIALS CHEMISTRY C | 2019年 / 7卷 / 25期

基金：

美国国家科学基金会;

关键词：

ENERGY-TRANSFER; WHITE-LIGHT; LUMINESCENCE PROPERTIES; QUANTUM EFFICIENCY; MN2+ PHOSPHOR; PHOTOLUMINESCENCE; TB3+; MECHANISM; SHIFT; EU-2+;

D O I：

10.1039/c8tc05777j

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

High purity Eu2+ and Ce3+ singly and co-activated Sr2LiAlO4 phosphors were successfully synthesized through a facile combustion reaction. Fabrication of color tunable, single-phase phosphors was achieved by varying the Eu2+/Ce3+ ratio that utilized the energy transfer between Ce3+ and Eu2+. For the singly activated compositions, the highest quantum efficiencies were 25% and 40% for Sr1.998Eu0.002LiAlO4 and Sr1.998Ce0.002LiAlO4, respectively. The emission of Sr2LiAlO4:Ce3+ and the excitation of Sr2LiAlO4:Eu2+ overlap in the range of 400 nm-500 nm, so that energy transfer from Ce3+ -> Eu2+ takes place. The emission color of Eu2+ and Ce3+ co-activated Sr2LiAlO4 changes from blue, to cool-white, to green depending on the activator concentrations. The maximum quantum efficiency of Eu2+ and Ce3+ co-activated Sr2LiAlO4 was 55%, a 40% increase over the singly activated phosphors, which demonstrates that the quantum efficiency improves by co-activation.

引用

页码：7734 / 7744

页数：11

共 63 条

[1]

[Anonymous], STRUCTURE MAT INTRO

[2] Pressure-Stimulated Synthesis and Luminescence Properties of Microcrystalline (Lu,Y)3Al5O12:Ce3+ Garnet Phosphors [J].

Atuchin, Victor V. ;

Beisel, Nina F. ;

Galashov, Eugeniy N. ;

Mandrik, Egor M. ;

Molokeev, Maxim S. ;

Yelisseyev, Alexander P. ;

Yusuf, Alexey A. ;

Xia, Zhiguo .

ACS APPLIED MATERIALS & INTERFACES, 2015, 7 (47) :26235-26243

[3] ENERGY TRANSFER IN OXIDIC PHOSPHORS [J].

BLASSE, G .

PHYSICS LETTERS A, 1968, A 28 (06) :444-&

[4] THERMAL QUENCHING OF CHARACTERISTIC FLUORESCENCE [J].

BLASSE, G .

JOURNAL OF CHEMICAL PHYSICS, 1969, 51 (08) :3529-&

[5] ENERGY-TRANSFER BETWEEN INEQUIVALENT EU-2+ IONS [J].

BLASSE, G .

JOURNAL OF SOLID STATE CHEMISTRY, 1986, 62 (02) :207-211

[6] Proxies from Ab Initio Calculations for Screening Efficient Ce3+ Phosphor Hosts [J].

Brgoch, Jakoah ;

DenBaars, Steven P. ;

Seshadri, Ram .

JOURNAL OF PHYSICAL CHEMISTRY C, 2013, 117 (35) :17955-17959

[7] Energy transfer in CaF2 doped with Ce3+, Eu 2+ and Mn2+ ions [J].

Caldiño, U.G. .

2003, Institute of Physics Publishing (15) :7127-7137

[8] Optimization of the Single-Phased White Phosphor of Li2SrSiO4:Eu2+, Ce3+ for Light-Emitting Diodes by Using the Combinatorial Approach Assisted with the Taguchi Method [J].

Chen, Lei ;

Luo, Anqi ;

Zhang, Yao ;

Liu, Fayong ;

Jiang, Yang ;

Xu, Qingsheng ;

Chen, Xinhui ;

Hu, Qngzhuo ;

Chen, Shi-Fu ;

Chen, Kuo-Ju ;

Kuo, Hao-Chung .

ACS COMBINATORIAL SCIENCE, 2012, 14 (12) :636-644

[9] Preparation and Photoluminescence Properties of Novel Color-Tunable MgY4Si3O13:Ce3+, Tb3+Phosphors for Ultraviolet Light-Emitting Diodes [J].

Chung, Hau-Yun ;

Lu, Chung-Hsin ;

Hsu, Chia-Hao .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2010, 93 (07) :1838-1841

[10] THEORY OF CONCENTRATION QUENCHING IN INORGANIC PHOSPHORS [J].

DEXTER, DL ;

SCHULMAN, JH .

JOURNAL OF CHEMICAL PHYSICS, 1954, 22 (06) :1063-1070

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