具有高热稳定性Sm^(3+)激活硼磷酸盐Na_(3)B_(6)PO_(13)橙红色荧光粉的发光特性  

Luminescence Properties of Sm^(3+) activated Borophosphate Na_(3)B_(6)PO_(13) Orange-red Phosphor with High Thermostability

作　　者：刘雨昕 胡倩 粟茵 文麒麟 刘丽欣 覃钺 梁露露 张宏志 朱静[1] LIU Yuxin;HU Qian;SU Yin;WEN Qilin;LIU Lixin;QIN Yue;LIANG Lulu;ZHANG Hongzhi;ZHU Jing(School of Materials and Energy,Yunnan University,Kunming 650000,China)

机构地区：[1]云南大学材料与能源学院,昆明650000

出　　处：《材料导报》2024年第21期21-26,共6页Materials Reports

基　　金：国家自然科学基金(22165031);国家大学生创新创业训练(202310673024)。

摘　　要：选用硼磷酸盐Na_(3)B_(6)PO_(13)作为基质,采用高温固相法合成Sm^(3+)激活橙红光荧光粉。利用X射线衍射、扫描电子显微镜和发光光谱等技术手段研究了荧光粉的晶体结构、微观形貌及发光性能。光谱测试结果表明,Na_(3)B_(6)PO_(13):9%Sm^(3+)的光谱强度最强,9%为最佳掺杂浓度,激发光谱峰值主要位于402 nm处,对应Sm^(3+)的^(6)H _(_(5/2))→^(4)F _(_(7/2))跃迁;发射峰主要位于599 nm与646 nm处,分别对应Sm^(3+)的^(4)G _(5/2)→^(4)H _(7/2)、^(6)H _(9/2)跃迁,而后随着掺杂浓度升高发生浓度猝灭现象,猝灭机制为电偶极-电四极相互作用。Na_(3)B_(6)PO_(13):9%Sm^(3+)的色坐标为(0.5591,0.4317),发光呈橙红色。发光热稳定性测试结果表明,样品在150℃时仍能保持室温下发光强度的90%。以上研究结果表明Na_(3)B_(6)PO_(13):Sm^(3+)可作为橙红色荧光粉候选材料。In this work,borophosphate Na_(3)B_(6)PO_(13) was used as substrate to synthesize Sm^(3+) activated orange-red phosphor by high temperature solid phase method.The crystal structure,microscopic morphology and luminescence properties of phosphors were studied by X-ray diffraction,scanning electron microscopy,and luminescence measurements.Na_(3)B_(6)PO_(13):9% Sm^(3+) has the strongest spectral intensity and the best doping concentration,the peak value of excitation spectrum is 402 nm,corresponding to the 6H_(5/2)→^(4)F_(7/2) transition.The emissions at 599 nm and 646 nm correspond to the ^(4)G_(5/2)→^(4)H_(7/2) and ^(6)H_(9/2)transitions,separately.The concentration quenching occurs with the increase of doping concentration,which is caused by the electric dipole-quadrupole interaction.The color coordinates of Na_(3)B_(6)PO_(13):9% Sm^(3+) are(0.5591,0.4317),corresponding to orange-red color.The temperature-dependent luminescence shows that the sample at 150℃ maintains 90%of the luminescence intensity at room temperature.The above results indicate that Na_(3)B_(6)PO_(13):Sm^(3+) phosphor is a promising orange-red phosphor material.

关 键 词：硼磷酸盐 SM 3+ 掺杂 橙红光 晶体结构 

分 类 号：O469[理学—凝聚态物理]