白光LED用荧光粉α-Sr2P2O7∶Eu^3＋的制备及其发光性能

功能材料, 2011, 42(11): 1998-2004.

白光LED用荧光粉α-Sr2P2O7∶Eu^3＋的制备及其发光性能

鄢蜜昉 ^1, , 薛丽红 ^2, , 严有为 ^3, , 姚山山 ^4,

1.华中科技大学模具技术国家重点实验室,湖北武汉430074

2.华中科技大学模具技术国家重点实验室,湖北武汉430074

3.华中科技大学模具技术国家重点实验室,湖北武汉430074

4.华中科技大学模具技术国家重点实验室,湖北武汉430074

基金项目: 湖北省自然科学基金资助项目(2008CB252) 中央高校基本科研业务费资助项目(C2009Q012) 国家自然科学基金资助项目(51002054)

关键词：溶液燃烧法 , α-Sr2P2O7 , Eu^3+ , 红色荧光粉 , 白光LED

Luminescence properties of α-Sr2P2O7：Eu^3＋ phosphor for white light emitting diode

Keywords： combustion method , α-Sr2P2O7 , Eu3＋ , red-emitting phosphor , white LED

以尿素为原料,采用溶液燃烧法合成出α-Sr2P2O7∶Eu^3＋红色荧光粉。利用XRD、FSEM和荧光光谱,研究了激活剂Eu3＋浓度、煅烧温度对荧光粉的晶体结构和发光性能的影响。光谱测量表明α-Sr2P2O7∶Eu^3＋的5 D0→7F1、5 D0→7F2跃迁发射最强,为红光发射;该荧光粉可被394nm近紫外光和464nm蓝光有效激发,有望成为一种近紫外LED和蓝光LED用的红色荧光粉。

Red emitting phosphor α-Sr2P2O7∶Eu^3＋ was prepared by a combustion-assisted synthesis method.The luminescence,crystallinity and particle sizes were investigated by using luminescence spectrometry,X-ray diffractometer,and field scanning electron microscopy.The emission spectrums shows that the most intense peak is located at 613nm,which correponds to the 5D0→7F2 transitions.The phosphors has two main excitation peaks located at 394 and 464nm,which mathch the emission of UV and blue light-emitting diodes,respectively.

参考文献

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