Blue to green emission and energy transfer between Ce3+ ions in Ca15Si20O10N30

被引：16

作者：

Li, Yanyan ^{[1
]}

Ding, Jianyan ^{[1
]}

Wu, Quansheng ^{[1
]}

Long, Qiang ^{[1
]}

Wang, Xicheng ^{[1
]}

Wang, Yuhua ^{[1
]}

机构：

[1] Lanzhou Univ, Sch Phys Sci & Technol, Key Lab Special Funct Mat & Struct Design, Minist Educ, Lanzhou 730000, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY C | 2015年 / 3卷 / 34期

关键词：

LIGHT-EMITTING-DIODES; DIFFERENT CRYSTALLOGRAPHIC SITES; LUMINESCENCE PROPERTIES; OXYNITRIDE PHOSPHORS; RED PHOSPHOR; EU2+; PHOTOLUMINESCENCE; LEDS;

D O I：

10.1039/c5tc01276g

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A near-ultraviolet (near-UV) excited phosphor, Ca15Si20O10N30:Ce3+, was synthesized by a solid state reaction, and its crystal structure and luminescence properties were investigated in detail. Ca15Si20O10N30 crystallizes in a cubic unit cell with the space group Pa (3) over bar and the lattice parameters are determined to be a = b = c = 15.4195(3) angstrom. The maximum emission wavelength can be tuned from about 470 to 520 nm as the content of Ce3+ increases due to the energy transfer between various Ce3+ activators located in different coordination environments, which was verified by the time-resolved emission spectroscopy (TRES) and the variation in the decay rate with respect to the detection wavelength. Upon excitation at 365 nm, Ca15Si20O10N30:Ce3+ exhibited a relatively low thermal quenching, and the T-50 is measured to be 233 degrees C. The above results indicate that Ca15Si20O10N30:Ce3+ is a promising candidate for application in white light-emitting diodes (LEDs).

引用

页码：8949 / 8955

页数：7

共 37 条

[1] Energy Transfer Between Activators at Different Crystallographic Sites [J].

Ahn, Docheon ;

Shin, Namsoo ;

Park, Ki Deog ;

Sohn, Kee-Sun .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2009, 156 (09) :J242-J248

[2]

[Anonymous], BLUE LASER DIODE

[3] Eu2+-activated silicon-oxynitride Ca3Si2O4N2: a green-emitting phosphor for white LEDs [J].

Chiu, Yi-Chen ;

Huang, Chien-Hao ;

Lee, Te-Ju ;

Liu, Wei-Ren ;

Yeh, Yao-Tsung ;

Jang, Shyue-Ming ;

Liu, Ru-Shi .

OPTICS EXPRESS, 2011, 19 (10) :A331-A339

[4] Long wavelength Ce3+ emission in Y6Si3O9N4 phosphors for white-emitting diodes [J].

Deng, Degang ;

Xu, Shiqing ;

Su, Xingyu ;

Wang, Qian ;

Li, Yinqun ;

Li, Gaofeng ;

Hua, Youjie ;

Huang, Lihui ;

Zhao, Shilong ;

Wang, Huanping ;

Li, Chenxia .

MATERIALS LETTERS, 2011, 65 (08) :1176-1178

[5]

Di Bartolo B., 1984, Energy Transfer Processes in Condensed Matter. Proceedings of a NATO Advanced Study Institute, P103

[6]

Dierre B, 2007, J MATER RES, V22, P1933, DOI 10.1557/JMR.2007.0231

[7] Relation between Eu2+ and Ce3+ f ⇆ d-transition energies in inorganic compounds [J].

Dorenbos, P .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2003, 15 (27) :4797-4807

[8] 5d-level energies of Ce3+ and the crystalline environment.: II.: Chloride, bromide, and iodide compounds [J].

Dorenbos, P .

PHYSICAL REVIEW B, 2000, 62 (23) :15650-15659

[9]

Fachun L., 2012, J RARE EARTH, V30, P851

[10] Photoluminescent Properties and Energy Transfer Mechanism of Color-Tunable CaSi2O2N2:Ce3+, Eu2+ Phosphors [J].

Hsu, Chia-Hao ;

Cheng, Bing-Ming ;

Lu, Chung-Hsin .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2011, 94 (09) :2878-2883

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