采用碳酸盐前躯体高温分解法合成了Sr1-xZnxY2S4:Er3+, Sr1-xZnxY2S4:Eu2+和Sr1-xZnxY2S4:Er3+, Eu2+红色荧光粉. XRD图谱表明, Zn2+掺杂量x<0.2 mol 时, 粉末样品为CaFe2O4型正交晶体. Zn2+离子在Sr1-xZnxY2S4:Er3+, Eu2+中的固溶量(x mol)对荧光粉的发射强度影响很大. 随着Zn2+离子掺杂浓度的增加, Sr1-xZnxY2S4:Er3+, Eu2+(SZYSEE)紫外区激发峰(200～413 nm)发生红移, 并与可见光激发带(413～600 nm)形成一个连续的宽带谱, 与紫外和GaN基LED芯片辐射都有良好的匹配性. 当Zn2+掺杂量为0.1 mol时, SZYSEE的发光强度达到最大, 其发光强度比未掺Zn2+的增强10.7倍. Sr0.9Zn0.1Y1.76S4:0.24Er3+, 0.006Eu2+是一种潜在的白光LED用红色荧光粉.
参考文献
| [1] | Hu Yunsheng;Zhuang Weidong;Ye Hongqi;Zhang Shusheng Fang Ying Huang Xiaowei .Preparation and luminescent properties of (Ca1-x,Srx)S:Eu2+ red-emitting phosphor for white LED[J].Journal of Luminescence,2005,111:139. |
| [2] | Xie RJ;Hirosaki N;Suehiro T;Xu FF;Mitomo M .A simple, efficient synthetic route to Sr2Si5N8 : Eu2+-based red phosphors for white light-emitting diodes[J].Chemistry of Materials: A Publication of the American Chemistry Society,2006(23):5578-5583. |
| [3] | Yang Ping,Lin Jianhua,Yao Guangqing.Luminescence and Preparation of LED Phosphor Ca8Mg(SiO4)4Cl2:Eu2+[J].稀土学报（英文版）,2005(05):633-635. |
| [4] | Suxia Yan;Jiahua Zhang;Xia Zhang .Enhanced Red Emission in CaMoO4:Bi~(3+),Eu~(3+)[J].The journal of physical chemistry, C. Nanomaterials and interfaces,2007(35):13256-13260. |
| [5] | Setlur, AA;Heward, WJ;Gao, Y;Srivastava, AM;Chandran, RG;Shankar, MV .Crystal chemistry and luminescence of Ce3+-doped (LuCaMg2)-Ca-2(Si, Ge)(3)O-12 and its use in LED based lighting[J].Chemistry of Materials,2006(14):3314-3322. |
| [6] | Yuta' Masako Matsumura;White William B .Photoluminescence of sulfide phosphors with the MB2S4 composition[J].Journal of the Electrochemical Society,1992,139(08):2347. |
| [7] | Lowema CK.;Smith TE.;Vanderah TA. .THE TERNARY YTTRIUM SULFIDES, CAY2S4, SRY2S4, AND BAY2S4 - STRUCTURES AND PROPERTIES[J].International Journal of Quantum Chemistry,1995(2):363-372. |
| [8] | Tsay BJ.;Hon MH.;Wang LH. .Formation and densification of CaLa2S4 powders by sulfidization of modified metal alkoxides in different atmospheres[J].Materials Science & Engineering, B. Solid-State Materials for Advanced Technology,2000(1):31-35. |
| [9] | 廉世勋,田科明,尹笃林,朱爱玲,刘利民.一类新的红色荧光粉MY2S4：Er3+（M=Sr2+,Ba2+）的合成与表征[J].高等学校化学学报,2007(06):1024-1026. |
| [10] | You YC.;Do YR.;Kim TW.;Park HL.;Choi JS. .TUNABLE COLOR EMISSION IN A BA1-XSRXY2S4-EU2+ PHOSPHOR[J].Solid State Communications,1996(12):961-963. |
| [11] | Zhang Xinmin,Wu Hao,Zeng Heping,Su Qiang.Luminescent Properties of SrGa2S4:Eu2+ and Its Application in Green-LEDs[J].稀土学报（英文版）,2007(06):701-705. |
| [12] | Schevciw O;White W B .The optical absorption edge of rare earth sesquisulfides and alkaline earth-rare earth sulfides[J].Materials Research Bulletin,1983,18(09):1059. |
| [13] | Walasek A;Eugeniusz Z;Zhang J;Wang SW .Synthesis, morphology and spectroscopy of cubicY(3)NbO(7): Er[J].Journal of Luminescence: An Interdisciplinary Journal of Research on Excited State Processes in Condensed Matter,2007(2):523-530. |
| [14] | Silver J;Martinez-Rubio M I;Ireland T G;Fern G R Withnall R .The effect of particle morphology and crystallite size on the upconversion luminescence properties of erbium and ytterbium Co-doped yttrium oxide phosphors[J].Journal of Physical Chemistry B,2001,105(05):948. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%