白光LED用荧光材料Ba3 Gd( BO3 )3:Eu3+的发光性能研究

中国稀土学报, 2009, 27(1): 31-35.

白光LED用荧光材料Ba3 Gd( BO3 )3:Eu3+的发光性能研究

周立亚 ^1, , 黄君丽 ^2, , 易灵红 ^3, , 龚孟濂 ^4, , 石建新 ^5,

1.广西大学化学化工学院,广西,南宁,530004

2.广西大学化学化工学院,广西,南宁,530004

3.广西大学化学化工学院,广西,南宁,530004

4.中山大学化学与化学工程学院,广东,广州,510275

5.中山大学化学与化学工程学院,广东,广州,510275

基金项目: 广西自治区科学基金(桂科基0731014) 广西大型仪器协作共用网资助项目

关键词： Ba3Gd(BO3)3 , 荧光粉 , 发光 , 稀土

Luminescent Properties of Ba3Gd(BO3)3:Eu3+ Phosphor for White LED Applications

用高温固相反应法制备了稀土离子Eu3+ 掺杂的三元稀土硼酸盐Ba3Gd(BO3)3发光材料, 通过X射线衍射 (XRD) 、荧光光谱和扫描电镜 (SEM) 等测试手段对Ba3Gd(BO3)3:Eu3+ 荧光粉的制备条件、发光性能以及形貌进行了研究. XRD结果表明, 在1000 ℃时可得到Ba3Gd(BO3)3 纯相. 扫描电镜照片显示颗粒基本为球形, 粒径约为200～400 nm. 发光光谱测试表明, Ba3Gd(BO3)3:Eu3+荧光粉在近紫外区(UV) (396 nm)和蓝光区(466 nm)可以被有效地激发, 分别用255和396 nm的紫外光激发样品时, 以Eu3+ 的 5D0-7F2 (611和616 nm) 超灵敏跃迁为主要发射峰. 当Eu3+的掺杂浓度为10%(摩尔分数)时, Ba3Gd(BO3)3:Eu3+ 在611和616 nm处的发光强度最大. 因此, 这种荧光粉是一种可能应用在白光LED上的红色荧光材料.

参考文献

[1]	Kim JS;Jeon PE;Park YH;Choi JC;Park HL;Kim GC;Kim TW .White-light generation through ultraviolet-emitting diode and white-emitting phosphor[J].Applied physics letters,2004(17):3696-3698.
[2]	Sun XYY;Zhang JH;Zhang X;Lu SZ;Wang XJ .A white light phosphor suitable for near ultraviolet excitation[J].Journal of Luminescence: An Interdisciplinary Journal of Research on Excited State Processes in Condensed Matter,2007(0):955-957.
[3]	Ekambaram S;Maaza M .Combustion synthesis and luminescent properties of Eu3+-activated cheap red phosphors[J].Journal of Alloys and Compounds,2005,395(1-2):132.
[4]	Wang JG;Jing XP;Yan CH;Lin JH;Liao FH .Influence of fluoride on f-f transitions of Eu3+ in LiEuM2O8 (M = Mo, W)[J].Journal of Luminescence: An Interdisciplinary Journal of Research on Excited State Processes in Condensed Matter,2006(1):57-61.
[5]	Zhou L;Hanxin SX;Gong ML .Synthesis and luminescent properties of BaGd2O4 : Eu3+ phosphor[J].The journal of physics and chemistry of solids,2007(8):1471-1475.
[6]	Wang ZL;Liang HB;Zhou LY;Wu H;Gong ML;Su Q .Luminescence of (Li0.333Na0.334K0.333)Eu(MoO4)(2) and its application in near UVInGaN-based light-emitting diode[J].Chemical Physics Letters,2005(4-6):313-316.
[7]	Xiao-xiao Wang;Jing Wang;Jian-xin Shi;Qiang Su;Meng-lian Gong .Intense red-emitting phosphors for LED solid-state lighting[J].Materials Research Bulletin: An International Journal Reporting Research on Crystal Growth and Materials Preparation and Characterization,2007(9):1669-1673.
[8]	Mueller-Mach R.;Mueller G.O.;Krames M.R.;Trottier T. .High-power phosphor-converted light-emitting diodes based onIII-Nitrides[J].IEEE journal of selected topics in quantum electronics: A publication of the IEEE Lasers and Electro-optics Society,2002(2):339-345.
[9]	Neeraj S.;Kijima N.;Cheetham AK. .Novel red phosphors for solid-state lighting: the system NaM(WO4)(2-x)(MoO4)(x): Eu3+ (M=Gd, Y, Bi)[J].Chemical Physics Letters,2004(1/3):2-6.
[10]	LI Panlai,YANG Zhiping,PANG Libin,WANG Zhijun,GUO Qinglin.Luminescent characteristics of Ba3Y2(BO3)4:Eu3+ phosphor for white LED[J].稀土学报（英文版）,2008(01):44-47.
[11]	Li P;Yang Z;Wang Z;Guo Q .White-light-emitting diodes of UV-based Sr3Y2(BO3)4:Dy3+ and luminescent properties[J].Materials Letters,2008,62(10-11):1455.
[12]	Blasse G .On the Eu3+ fluorescence of mixed metal oxides.IV The photoluminescent efficiency of Eu3+-activated oxides[J].Journal of Chemical Physics,1966,45:2356.
[13]	Reddy K R;Annapurna K;Buddhudu S .Fluorescence spectra of Eu3+:Ln2O2S (Ln=Y,La,Gd) powder phosphors[J].Materials Research Bulletin,1996,31(11):1355.

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