Preparation and Luminescence Properties of Dy3+ Doped Sr3Lu(PO4)3 as a New Single Phase White Light Emitting Phosphor
The novel white light emitting phosphors Sr3Lu(1-x)Dyx(PO4)3 (x =0.02, 0.04, 0.06, 0.08, 0.10) were synthesized via a conventional high-temperature solid-state reaction method at 1250℃.The excitation spectrum indicated that these phosphors had a strong absorption in near UV region in the range from 260 to 460 nm.And under 350 nm excitation, the blue emission at 483nm (4F9/2→6H15/2) and yellow emission at 576 nm (4F9/2→6H13/2) were observed in the phosphors, respectively.We studied the effect of different doping concentrations of Dy3+ activator on the luminescence properties and found that the optimum doping concentration is 6 mol%.According to the Dexters theory, this quenching behavior is ascribed to be electric d-d interaction.Furthermore, the chromaticity coordinate (x =0.28, y =0.32) of Sr3Lu(PO4)3∶0.06Dy3+ phosphor was very close to the ideal white (x =0.33, y =0.33) in the chromaticity diagram.Our results indicate that the Sr3Lu(PO4)3∶Dy3+ phosphor can serve as a promising candidate for single-component white light emitting phosphor under near UV excitation.
Phosphor Solid state reactions Sr3Lu(PO4)3∶Dy3+ Optical properties
Jiang-nan Du Deng-hui Xu Zai-fa Yang Xue-dong Gao Jia-yue Sun
School of Science, Beijing Technology and Business University, Beijing, 100048, China
国际会议
The 2016 China Functional Materials Technology and Industry Forum (2016中国国际功能材料大会暨第九届中国功能材料及其应用学术会议)
重庆
英文
612-617
2016-07-25（万方平台首次上网日期，不代表论文的发表时间）