【作者】 熊正烨； 唐强； 张纯祥； 罗达玲； 陈劲民； 刘小伟；

【Author】 Xiong Zhengye~1 Tang Qiang~2 Zhang Chunxiang~2 Luo Daling~2 Chen Jinmin~1 Liu Xiaowei~2 1 College of Science,Guangdong Ocean University,Zhanjiang 524088,China;2 Department of Physics,Sun Yat-sen University,Guangzhou 510275,China

【机构】 广东海洋大学理学院； 中山大学理工学院；

【摘要】 Li₂B₄O₇:Cu,Ag,P是一种非常具有应用前景的热释光剂量计材料。本文在成功制备性能较好的Li₂B₄O₇:Cu,Ag,P热释光磷光体的基础上,测量了该磷光体的热释光谱和荧光谱。特别对含不同浓度P的磷光体进行了系统测量。热释光谱和荧光谱的发光波段主要集中在350nm～420nm,中心发光波长在380nm附近;不同浓度P的磷光体的热释光谱强弱虽然有变化,但发光的谱形没有变化:对不同浓度P的磷光体的荧光谱,其强弱和谱形都基本没有变化。测量结果表明,热释光谱与荧光谱一样是一种观测发光中心的非常有效的实验方法,而且它还可以反映磷光体的缺陷情况;杂质P对Li₂B₄O₇:Cu,Ag,P磷光体的发光中心几乎没有影响,但影响磷光体内的热释光缺陷的浓度。更多还原

【Abstract】 LBO:Cu,Ag,P phosphors are very useful for personal dosimetry measurements.This paper reports the thermoluminescence （TL） and fluorescence （FL） of Li₂B₄O₇:Cu,Ag,P phosphors with a series of P concentrations which were prepared by our group.The emission of thermoluminescence and fluorescence features between 350 and 420nm,and with the maximum about 380nm.The TL spectra curve shape of the phosphors doesn’t change with the variety of P concentration,although the TL intensity does.The spectra curve shape and intensity of FL has a little change with the variety of P concentration of phosphors.This indicated that TL spectra is a very effective method to measure luminescence centers of phosphors,just as FL method,and dopant P has little effect to luminescence centers of Li₂B₄O₇:Cu,Ag,P phosphors,although it can change the concentration of TL traps.更多还原