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合成制度对白光LED用硅酸盐Sr_2SiO_4:Eu荧光粉发光性能的影响

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Abstract:

采用高温固相法合成用于白光发光二极管(light-emittingdiode,LED)发光的Sr2SiO4Eu荧光粉,测量Eu2+掺杂0.0035mol时样品的激发与发射光谱,研究荧光粉在不同合成温度、不同保温时间的荧光光谱及在不同激发波长激发的发光性能。用X射线衍射和扫描电镜比较分析荧光粉在不同合成温度的物相和形貌,确定还原气氛中Sr2SiO40.0035Eu荧光粉的最佳合成温度为1250℃和保温时间为3h时,可得到发光性能较好的斜方晶系、α′相Sr2SiO4Eu。

References

[1]  吴昊,潘跃晓,郭崇峰,等.白光LED用稀土荧光粉的制备和性质[J].发光学报,2006,27(2):201-205. [2]NAKAMURA S,FASOL G.The Blue Laser Diode:GaN Based Light Emitters and Lasers[M].Berlin:Springer-Verlag,1997:p216. [3]李盼来,杨志平,王志军,等.用于白光LED的Sr3SiO5:Eu2+材料制备及发光特性研究[J].科学通报,2007,52(13):1495-1498.LI Panlai,YANG Zhiping,WANG Zhijun,et al.Chin Sci Bull(in Chi-nese),2007,52(13):1495-1498. [4]罗昔贤,曹望,孙菲.硅酸盐基质白光LED用宽激发带发光材料研究进展[J].科学通报,2008,53(9):1010-1016.LUO Xixian,CAO Wang,SUN Fei.Chin Sci Bull(in Chinese),2008,53(9):1010-1016. [5]BARRY Thomas L.Fluorescence of Eu-activated phases in binary alka-line earth orthosilicate systems[J].J Electrchem Soc,1968,115:1181-1184. [6]PARK J K,LIM M A,KIM C H,et al.White light-emitting diodes of GaN-based Sr2SiO4:Eu and the luminescent properties[J].Appl Phy Lett,2003,82(5):683-685. [7]JONG Su-Kim,YUN Hyung-Park,SUN Myung-Kim,et al.Tempera-ture-dependent emission spectra of M2SiO4:Eu2+(M=Ca,Sr,Ba)phosphors for green and greenish white LEDs[J].Solid State Commun,2005,133(7):445-448. [8]JEE Hee-Lee,YOUNG Jin-Kim.Photoluminescent properties of Sr2SiO4:Eu2+phosphors prepared by solid-state reaction method[J].Mater Sci Eng,2008,146(1/2/3):99-102. [9]POORT S H M,JANSSEN W,BLASSE G.Optical properties of Eu2+-activated orthosilicates and orthophosphates[J].J Alloys Compd,1997,260(1/2):93-97 [10]KIM J S,JEON P E,CHOI J C,et al.Emission color variation of M2SiO4:Eu2+(M=Ba,Sr,Ca)phosphors for light-emitting diode[J].Solid State Commun,2005,133(3):187-190.

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