YAG Phosphors of WLEDs Synthesized by Advanced Pechini Method

WAN Xian-long; RAO Hai-bo; XIE Li-kun; WANG Wei; ZHOU Lin-song

doi:10.3788/fgxb20133406.0698

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YAG Phosphors of WLEDs Synthesized by Advanced Pechini Method

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- YAG Phosphors of WLEDs Synthesized by Advanced Pechini Method
- Chinese Journal of Luminescence Vol. 34, Issue 6, Pages: 698-701(2013)
- 作者机构：
  
  电子科技大学光电学院,四川成都,610054
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20133406.0698
  CLC： O482.31
- Received：21 March 2013，
  
  Revised：16 April 2013，
  
  Published：10 June 2013
- 稿件说明：
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万贤龙, 饶海波, 谢立坤, 王玮, 周琳淞. 基于改进的Pechini法制备白光LED用YAG荧光粉[J]. 发光学报, 2013,34(6): 698-701

WAN Xian-long, RAO Hai-bo, XIE Li-kun, WANG Wei, ZHOU Lin-song. YAG Phosphors of WLEDs Synthesized by Advanced Pechini Method[J]. Chinese Journal of Luminescence, 2013,34(6): 698-701
万贤龙, 饶海波, 谢立坤, 王玮, 周琳淞. 基于改进的Pechini法制备白光LED用YAG荧光粉[J]. 发光学报, 2013,34(6): 698-701 DOI： 10.3788/fgxb20133406.0698.

WAN Xian-long, RAO Hai-bo, XIE Li-kun, WANG Wei, ZHOU Lin-song. YAG Phosphors of WLEDs Synthesized by Advanced Pechini Method[J]. Chinese Journal of Luminescence, 2013,34(6): 698-701 DOI： 10.3788/fgxb20133406.0698.

摘要

对Pechini法进行了改进。使用硝酸化合物作为反应物

柠檬酸氨为螯合剂

聚丙烯酰胺为聚合剂

N-亚甲基双丙烯酰胺为网络剂

溶于丙酮的偶氮二异丁腈为引发剂

制备了白光用YAG荧光粉。使用差热分析、XRD、SEM对YAG荧光粉进行了分析。相比于其他方法

用改进的Pechini法制备得到的YAG荧光粉结晶完整

物相较纯

形成温度较低(860 ℃)

颗粒大小合适。将所制备的荧光粉涂覆在LED上进行了测试

结果表明其发光效率为目前商业荧光粉的90.1%。

Abstract

An improved Pechini method was applied to synthesize YAG phosphor. Yttrium nitrate

cerium nitrate and aluminium nitrate were used as raw materials with ammonium citrate as complexing reagent and polyacrylamide as polymerizer. The YAG phosphor was analyzed by TG-DSC

XRD and SEM. The results showed that the phosphors synthesized by improved Pechini method had better crystallinity at lower calcining temperature compared with commercial advanced products. The illumination performance of pc-LEDs coated with the synthesized YAG phosphor were measured. The results show that the luminous efficiency of the synthesized YAG phosphor is 90.1% of the commercial advanced phosphor.

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Keywords

references

Yin Y, Yang B D, Zhu Y H, et al.The development actuality of phosphor for white LEDs[J]. China Light & Lighting (中国照明电器),2009(3):6-10 (in Chinese).[2] Li D P, Miao C Y, Liu L F, et al.Progress on research of blue LED converted white materials YAG:Ce3+[J]. Chin. J. Liq. Crys. Disp.(液晶与显示),2005, 20(6):526-531 (in Chinese).[3] Wang J Q, Tao Z D, Zheng S H, et al.Influence of fabrication conditions on transparency of YAG polycrystalline by solid-state reaction method[J]. Chin. J. Nonferr. Metals (中国有色金属学报), 2003, 13(2):432-436 (in Chinese).[4] Liu R X, Shi J R. Study of formulation and mechanism of yttrium aluminum garnet phorphors for use in white light emitting diodes[J]. Chin. J. Rare-Earths (中国稀土学报), 2002, 20(6):495-501 (in Chinese).[5] Douy A. Polyacrylamide gel: An efficient tool for easy synthesis of multicomponent oxide precursors of ceramics and glasses[J]. Inter. J. Inorg. Mater., 2001, 3(7):699-707.[6] Potdevin A, Chadeyron G, Boyer D, et al.Sol-gel based YAG:Ce3+ powders for applications in LED devices[J]. Phys. State Solidi (c), 2007, 4(1):65-69.[7] Shen F H, Rao H B, Guo Z Y. Study of YAG nanoparticles prepared by using improved Pechini method[J]. Infrared (红外),2009, 30(6):31-34 (in Chinese).[8] Pan Y X, Wu M M, Su Q. Comparative investigation on synthesis and photoluminescence of YAG:Ce phosphor[J]. Mater. Sci. Eng: B, 2004, 106(3):251-256.

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