用高温固相法制备了 Ca2 MgSi2O7:Ce3+,Eu2,并研究其发光特性.Ce3+的发射带峰值位于410 nm,对应于Ce3+的5d→4f跃迁；Eu2+的发射带峰值位于530 nm,对应于Eu2+的5d→4f跃迁.双掺样品的发射光谱表明两种离子间存在高效的电偶极-电偶极能量传递.当Ce3+和Eu2浓度分别为2％和0.125％时,样品发射光谱(λex=360 nm)色坐标为(0.221,0.312),落在白光区.以上研究说明Ca2 MgSi2O7:Ce3+,Eu2+是一种适用于近紫外芯片的新型WLED荧光粉,其光色可调谐.
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] | Guo H;Wang X;Cheng J;Li F .Blue-white-green tunable luminescence from Ba2Gd2Si4O13:Ce3+,Tb3+ phosphors excited by ultraviolet light[J].Optics Express,2011,18(26):27257. |
| [3] | Hau-Yun Chung;Chung-Hsin Lu;Chia-Hao Hsu .Preparation and Photoluminescence Properties of Novel Color-Tunable MgY_4Si_3O_(13):Ce~(3+), Tb~(3+) Phosphors for Ultraviolet Light-Emitting Diodes[J].Journal of the American Ceramic Society,2010(7):1838-1841. |
| [4] | Woan-Jen Yang;Teng-Ming Chen .White-light generation and energy transfer in SrZn_(2)(PO_(4))_(2):Eu, Mn phosphor for ultraviolet light-emitting diodes[J].Applied physics letters,2006(10):101903-1-101903-3-0. |
| [5] | Kohsei Takahashi;Naoto Hirosaki;Ronq-Jun Xie;Masamichi Harada;Ken-ichi Yoshimura;Yoshitaka Tomomura .Luminescence properties of blue La_(1-x)Ce_xAl(Si_(6-z)Al_z)(N_(10-z)O_z) (z～1) oxynitride phosphors and their application in white light-emitting diode[J].Applied physics letters,2007(9):091923.1-091923.3. |
| [6] | 张中太;张俊英.无机光致发光材料及应用[M].北京:化学工业出版社,2005:244. |
| [7] | 潘政薇,何洪,宋秀峰,赵昕冉,傅仁利.LED用稀土Eu掺杂硅酸盐基荧光粉的研究进展[J].硅酸盐学报,2009(09):1590-1596. |
| [8] | Chun-Kuei Chang;Teng-Ming Chen .White light generation under violet-blue excitation from tunable green-to-red emitting Ca_(2)MgSi_(2)O_(7):Eu, Mn through energy transfer[J].Applied physics letters,2007(16):161901-1-161901-3-0. |
| [9] | Kim JS;Park YH;Choi JC;Park HL;Kim GC;Yoo JH .Color tunability of nanophosphors by changing cations for solid-state lighting[J].Solid State Communications,2006(4):187-190. |
| [10] | Kim JS;Kwon AK;Park YH;Choi JC;Park HL;Kim GC .Luminescent and thermal properties of full-color emitting X3MgSi2O8 : Eu2+, Mn2+ (X = Ba, Sr, Ca) phosphors for white LED[J].Journal of Luminescence: An Interdisciplinary Journal of Research on Excited State Processes in Condensed Matter,2007(0):583-586. |
| [11] | Chang CK;Chen TM .Sr3B2O6 : Ce3+,Eu2+: A potential single-phased white-emitting borate phosphor for ultraviolet light-emitting diodes[J].Applied physics letters,2007(8):81902-1-81902-3-0. |
| [12] | Woan-Jen Yang;Teng-Ming Chen .Ce~(3+)/Eu~(2+) codoped Ba_(2)ZnS_(3): A blue radiation-converting phosphor for white light-emitting diodes[J].Applied Physics Letters,2007(17):171908-1-171908-3-0. |
| [13] | Meng Jian-Xin;YangChuang-Tao;ChenQing-Qing .PhotoluminescencecharacterizationofCe3+ and Dy3+ doped Li2CaGeO4 phosphors[J].Journal of Luminescence: An Interdisciplinary Journal of Research on Excited State Processes in Condensed Matter,2010(7):1320-1323. |
| [14] | Yang H;Hazen R M;Finger L W;Prewitt C T Downs R T .Compressibility and crystal structure of sillimanite,Al2 SiO5,at high pressure[J].Physics and Chemistry of Minerals,1997,25(01):39. |
| [15] | 章少华,胡江峰,王建军,谢冰.Ce~（3+）和Y~（3+）掺杂对Ca_2MgSi_2O_7：Eu~（2+）荧光粉发光性能的影响[J].材料导报,2010(06):8-10. |
| [16] | Dexter D L .Theory of concentration quenching in inorganic phosphors[J].Journal of Chemical Physics,1954,22(06):1063. |
| [17] | 孙家跃;杜海燕;胡文样.固体发光材料[M].北京:化学工业出版社,2003:151. |
| [18] | Paulose PI.;Jose G.;Thomas V.;Unnikrishnan NV.;Warrier MKR. .Sensitized fluorescence of Ce3+/Mn2+ system in phosphate glass[J].The journal of physics and chemistry of solids,2003(5):841-846. |
| [19] | Huan Jiao;Fuhui Liao;Shujian Tian .Luminescent Properties of Eu~(3+) and Tb~(3+) Activated Zn_3Ta_2O_8[J].Journal of the Electrochemical Society,2003(9):H220-H224. |
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%