Synthesis and luminescence properties of K2ZnSiO4:Sm3+ reddish-orange phosphor for white LED

被引：0
作者：
Wang, Ping [1 ]
Yang, Dingming [1 ]
Wang, Gang [1 ]
机构：
[1] School of Materials Science and Engineering, Southwest University of Science and Technology, State Key Laboratory Cultivation Base for Nonmetal Composite and Functional Materials, Mianyang, 621010, Sichuan
来源：
Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society | 2015年 / 43卷 / 12期
关键词：
Luminescent properties; Reddish-orange fluorescence powder; Samarium-doped zinc potassium silicate; Sol-gel method;
D O I：
10.14062/j.issn.0454-5648.2015.12.16
中图分类号：
学科分类号：
摘要：
The reddish-orange emitting phosphor K2ZnSiO4: Sm3+, which can be used for white light-emitting diode, was synthesized by a sol-gel method, and its phase structure and luminescent properties were investigated. Based on the X-ray diffraction data, the principal crystalline phase of the sample doped a small amount of Sm3+ is K2ZnSiO4 with orthorhombic crystal structure. The K2ZnSiO4:Sm3+ phosphor can be effectively excited by a near ultraviolet source. The emission spectra are composed of four emission peaks under excitation at 403 nm. The most intense peak appears at 605 nm, which is ascribed to 4G5/2→6H7/2 transition of Sm3+. The luminescent intensity firstly increases and then decreases with increasing the Sm3+ content. The optimum concentration of Sm3+ is 7% in mole. The commission international de L'Eclairage chromaticity coordinates of K2ZnSiO4:Sm3+ locate in the reddish-orange region and do not change as the mass fraction of Sm3+ increases. © 2015, Editorial Department of Journal of the Chinese Ceramic Society. All right reserved.
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页码：1772 / 1776
页数：4
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