Effect of Alkali Metal Ions(Li＋, Na＋ and K＋) on the Luminescent Properties of ZnTiO3：Eu3＋ Phosphors

作     者：赵景川 焦宝祥 刘银 田浩 胡聪 

作者机构：School of Materials Science and Engineering Yancheng Institute of Technology School of Materials Science and Engineering Anhui University of Science and Technology 

出 版 物：《Chinese Journal of Structural Chemistry》 (结构化学（英文）)

年 卷 期：2017年第36卷第8期

页      面：1291-1298页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 

基　　金：Supported by Department of Social Development Project of Jiangsu Province(BE2015659) Science and Technology Project of Anhui Province(1604a0802122) Collaborative Innovation Center Project in Jiangsu Province(GX2015302) 

主　　题：alkali metal ions phosphors ZnTiO3 Eu3+ luminescence 

摘      要：A series of red emitting ZnTiO3 phosphors co-doped with Eu3＋） and alkali metal ions（Li＋, Na＋ and K＋） was prepared by sol-gel method. The crystal structure of the phosphors was investigated by using X-ray diffraction（XRD） and transmission electron microscopy（TEM） after annealing at 700 ℃. The results show that the crystal structure belongs to the hexagonal phase of ZnTiO3 with space group R-3：R. The influence of site occupancy of different alkali metal ions on the emission of ZnTiO3：Eu3＋） phosphors was investigated in detail. The emission intensity was significantly enhanced by introducing alkali metal ions. In contrast to Eu3＋） singly doped ZnTiO3, the red emission intensities of ZnTiO3：Eu3＋） with 4 mol% alkali metal ions（Li＋, Na＋, K＋） were enhanced by about 2.1, 1.7 and 1.4 times, respectively. In addition, the Commission Internationale Ed I＇eclairage（CIE） chromaticity coordinates of ZnTiO3：Eu3＋）, Li＋（0.672, 0.328） are quite similar to the National Television Standard Committee（NTSC） standard values for the red（0.670, 0.380）.