Eu_2O_3掺杂天然方柱石蓝色长余辉发光特性  

Long Afterglow Luminescent Properties of Eu_2O_3 Doped Scapolite(Na_4Ca_4Al_6Si_9O_(24))

作　　者：程静[1] 杨志杰 何久洋[2] 艾尔肯.斯地克 CHENG Jing;YANG Zhi-jie;HE Jiu-yang;;AIERKEN·Sidike(Prepschool Education College,Xinjiang Normal University,Urumqi,Xinjiang,830013,China;Key Laboratory of Mineral Luminescent Material and Microstructure of Xinjiang,Laboratory of Novel Light Source and Micro/Nano-Optics,Xinjiang Normal University,Urumqi,Xinjiang,830054,China)

机构地区：[1]新疆师范大学预科教育学院,新疆乌鲁木齐830013 [2]新疆师范大学新疆矿物发光材料及其微结构实验室新型光源与微纳米光学实验室,新疆乌鲁木齐830054

出　　处：《新疆师范大学学报（自然科学版）》2018年第2期75-79,共5页Journal of Xinjiang Normal University(Natural Sciences Edition)

基　　金：新疆师范大学新疆矿物发光材料及其微结构实验室招标课题(KWFG1501);新疆师范大学理论物理自治区重点学科招标课题(13XSQZ0603)资助

摘　　要：文章采用高温固相法在1000摄氏度弱还原气氛下制备了Eu^(2+)掺杂天然方柱石光致发光粉末。对天然方柱石的化学成分采用了电子探针能谱分析,采用X射线衍射(XRD)对所制备的样品进行结构表征分析,并观测了样品的发光性质。结果表明,掺杂Eu^(2+)的天然方柱石发出强烈的蓝色荧光,激发和发射光谱皆为宽带谱,发射谱峰值位于440 nm左右,对应于Eu^(2+)的4f^(65)d→4f^7跃迁,其余辉时间超过2分钟。最后通过对掺杂不同浓度Eu^(2+)样品发光性质的研究,认为最佳掺杂浓度为1.5 wt%。The Eu^2＋ doped natural scapolite（Na4Ca4Al6Si9O24）phosphor powder were synthesized successfully by solid-state method in a weak reducing atmosphere（H2/N2= 5∶95）at 1,000℃. We measured the chemical composition of natural scapolite with an electron probe micro-analyzer（EPMA）,and the crystal structure is discussed with XRD. The photo luminescence（PL）properties of the obtained phosphors were studied. The results indicated that the Na4Ca4Al6Si9O24：Eu^2＋ can emission strong,blue-tinged light. The excitation or emission spectrum was observed in peak is characterized by high width at half maxima. And the emission spectrum peak in 440 nm,corresponding to the 4 f65 d →4 f7 transition within Eu^2＋ . The sample has long afterglow,and the maximum afterglow time for more than 7 minutes. At last,we considered that the optimum doping concentration of Na4Ca4Al6Si9O24：Eu^2＋ is 1.5 wt% according to the luminescence properties of the samples with different Eu^2＋ concentration measurement.

关 键 词：方柱石 EU^2+ 高温固相法 光致发光 长余辉 

分 类 号：O482.31[理学—固体物理]