YAG: Ce Phosphors for WLED via Nano-Pesudoboehmite Sol-Gel Route

稀土学报(英文版), 2006, 24(3): 294-297.

^1, , ^2, , ^3, , ^4, , ^5, , ^6,

1.Institute of Materials Physics, Tianjin University of Technology, Tianjin 300191, China;School of Science, Tianjin Polytechnic University, Tianjin 300160, China

2.Institute of Materials Physics, Tianjin University of Technology, Tianjin 300191, China;Tianjin Key Laboratory for Photoelectric Materials and Devices, Tianjin 300191, China

3.Institute of Materials Physics, Tianjin University of Technology, Tianjin 300191, China;Tianjin Key Laboratory for Photoelectric Materials and Devices, Tianjin 300191, China

4.Faculty of Materials and Metallurgical Engineering, Kunming University of Science and Technology, Kunming 650093, China

5.Institute of Materials Physics, Tianjin University of Technology, Tianjin 300191, China

6.Institute of Materials Physics, Tianjin University of Technology, Tianjin 300191, China

基金项目: Natural Science Foundation of Tianjin(033601111；06YFJMJC02300) 国家自然科学基金(50364002) 天津工业大学校科研和教改项目(Lg04032)

YAG: Ce Phosphors for WLED via Nano-Pesudoboehmite Sol-Gel Route

Keywords： pseudo-boehmite

The sub-micron sized YAG: Ce phosphors were synthesized via a modified sol-gel method by peptizing nano-pesudoboehmite particulate. It is found that YAG phase from the dried gel powders appears at 1000 ℃ then the pure YAG phase exists at a relatively lower sintering temperature of 1400 ℃. The smaller sizes of phosphors in the ranges of 1 ～ 3 μm are obtained due to the contribution of seeding effects of nano-sized alumina particles to strengthen each step of the processes. Both the excitation and emission spectra of photoluminescence of the phosphor obtained at 1400 ℃ meet well with the spectroscopic requirements of the WLED phosphors.

参考文献

[1]	Jun-ho Yum;Soo-Yeon Seo;Seonghoon Lee .Y_3Al_5O_(12):Ce_(0.05) Phosphor Coatings on Gallium Nitride for White Light Emitting Diodes[J].Journal of the Electrochemical Society,2003(2):H47-H52.
[2]	Shi Shikao;Wang Jiye .Combustion synthesis of Eu~(3+) activated Y_3Al_5O_(12) phosphor nanoparticles[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2001(1/2):82-86.
[3]	Lu Chung-Hsin;Jagannathan R .Cerium-ion-doped yttrium aluminum garnet nanophosphors prepared through sol-gel pyrolysis for luminescent lighting[J].Applied Physics Letters,2002,80(19):3608.
[4]	Geng Xiujuan,Chen Yongjie,QIU Guanming,XIAO Linjiu,Yan Changhao,Sun Yanbin.Synthesis of Long Afterglow Photoluminescent Materials Sr2MgSi2O7∶Eu2+, Dy3+ by Sol-Gel Method[J].稀土学报（英文版）,2005(03):292-294.
[5]	Zhang Huashan,Su Chunhui,Han Hui,Hou Zhaoxia.Synthesis of Neodymium-Doped Yttrium Aluminum Garnet (Nd∶YAG) Nano-Sized Powders by Low Temperature Combustion[J].稀土学报（英文版）,2005(03):304-308.
[6]	翟永清,姚子华,刘保生,翟建,王凯肖.Luminescent Properties of Y2O3∶Eu Nanocrystalls Synthesized by EDTA Complexing Sol-Gel Process[J].稀土学报(英文版),2002(05):465-470.
[7]	Vishista K;Gnanam F D .Effect of deflocculants on the densification and mechanical properties of sol-gel alumina[J].Materials Letters,2004,58:1665.
[8]	Fangli Yuan;Hojin Ryu .Ce-doped YAG phosphor powders prepared by co-precipitation and heterogeneous precipitation[J].Materials Science & Engineering, B. Solid-State Materials for Advanced Technology,2004(1):14-18.
[9]	Kang Yun Chan;Lenggoro I Wuled;Park Seung Bin et al.YAG:Ce phosphor particles prepared by ultrasonic spray pyrolysis[J].Materials Research Bulletin,2000,35:789.
[10]	Li Q.;Yan DS.;Gao L. .The crystal structure and spectra of nano-scale YAG : Ce3+[J].Materials Chemistry and Physics,2000(1):41-44.

上一张下一张

计量

下载量()
访问量()

作者相关

在本站搜索
在百度学术搜索
在万方数据库搜索
在CNKI搜索

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%

材料期刊网

YAG: Ce Phosphors for WLED via Nano-Pesudoboehmite Sol-Gel Route

参考文献