摘要
采用凝胶-燃烧法合成了Sr1.99SiO4∶Ce3+0.01蓝紫色荧光粉,对不同C6H8O7和NH4NO3加入量、H3BO3加入量和电荷补偿剂对Sr1.99SiO4∶Ce3+0.01发光性能的影响进行了讨论。结果表明:所得Sr1.99SiO4∶Ce3+0.01样品为α'-Sr2SiO4纯相;其发光谱为220~400 nm的近紫外宽带谱,归属于Ce3+离子的5d04f1→5d14f0跃迁;发射光谱是峰值位于405nm的不对称单峰宽带谱,由398 nm和427 nm两个高斯峰组成,分别来源于同一发光中心的Ce3+离子5d14f0向基态2F7/2和2F5/2能级的跃迁;C6H8O7和NH4NO3的最佳加入量为n(C6H8O7)/n(Sr(NO3)2)=0.5,n(NH4NO3)/n(Sr(NO3)2)=2.0;H3BO3最佳加入量为12mol%;最佳电荷补偿剂为Li+。
Abstract： The Sr1.99 SiO4： 3 ＋ Ce^3＋0.01purple blue light emitting phosphor was synthesized by gel-combustionmethod, and the influence of different addition of C6H807 and NH4N03, different addition of H3B03, different charge compensation agent on the luminescence property of Sr1.99 SiO4： 3 ＋ Ce^3＋0.01 were studied. The results show that the Sr1.99 SiO4： 3 ＋ Ce^3＋0.01sample belong to α＇-Sr2SiO4 with orthorhombic-structure, and the fluorescence spectrum tests indicate that the sample excitation is a broad band of 220-400 nm which is attributed to the typical 5d^°4f^1- 5d^14f^° transition of Ce^3＋ and the sample excitation is an asymmetric single-peak broad band with peak values of 405 nm that it is purple blue light emitting which is made up of two Gauss fitted peaks, 398 nm and 427 nm, which are attributed to the typical5d^°4f^1- 5d^14f^° transition of Ce3^ ＋ , and the optimum addition of C6 Hs 07 is n （ C6 Hs O7 ）/n （ Sr （ NO3 ） 2 ） = 0.5, and the optimum addition of C6 Ha O7 is n （ NH4 NO3 ）/rt （ Sr （ NO3 ） 2 ） = 2.0, and the optimum addition of H3 BO3 is 12mo1% , and the optimum addition of the H3BO3 is 12mo1%, and the best charge compensation agent is Li^＋
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2014年第8期1924-1928,1939,共6页
Bulletin of the Chinese Ceramic Society
基金
材料复合新技术国家重点实验室(武汉理工大学)开放基金项目(2012-KF-7)
江西省教育厅科学技术研究项目(GJJ14787)
作者简介
陈林（1981-），男，硕士，副教授．主要从事稀土发光材料及纳米材料研究．
