真空紫外光及X射线激发下Pr^(3+)掺杂Ba_(3)La(PO_(4))_(3)发光性质  

Luminescence Properties of Pr^(3+)Doped in Ba_(3)La(PO_(4))_(3) with Vacuum Ultraviolet and X-ray Excitation

作　　者：时秋峰 王磊 郭海洁 黄平 崔彩娥 黄艳[2] SHI Qiu-feng;WANG Lei;GUO Hai-jie;HUANG Ping;CUI Cai-e;HUANG Yan(College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan 030024, China;Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China)

机构地区：[1]太原理工大学物理与光电工程学院,山西太原030024 [2]中国科学院高能物理研究所北京同步辐射装置,北京100049

出　　处：《发光学报》2021年第11期1756-1762,共7页Chinese Journal of Luminescence

基　　金：山西省重点研发计划项目(201903D121097)资助。

摘　　要：Pr^(3+)4f5d具有大的辐射跃迁速率,是高效快响应闪烁体材料较有前景的发光中心离子。本文采用高温固相法制备了Pr^(3+)掺杂Ba_(3)La(PO_(4))_(3)(BLP)光转换材料,对其物相、真空紫外发光性质、X射线激发发光性质、发光衰减特性和发光热稳定性进行了表征。结果表明,BLP∶Pr^(3+)具有高效的Pr^(3+)4f5d宽带发光,发光寿命为~15 ns,且具有较好的发光热稳定性。在基质172 nm激发下,存在基质到Pr^(3+)4f5d的能量传递,而在X射线激发下可能受表面缺陷影响未发现明显的Pr^(3+)4f5d发光。本文研究结果表明,BLP∶Pr^(3+)在作为真空紫外到UV-C光转换材料方面具有潜在的应用价值。本研究对于设计新型快响应闪烁体具有一定的指导意义。The radiative transition rate of Pr^(3+)4f5d is large,which makes it as a promising luminescence center of fast scintillators.Samples of Ba_(3)La(PO_(4))_(3)(BLP)activated with Pr^(3+) were prepared through high temperature solid state method and characterized by XRD,temperature-dependent luminescence spectra upon VUV-UV and X-ray excitations and decay curves.Efficient and thermal stable Pr^(3+)4f5d broad band emission with decay time of~15 ns was observed.There is energy transfer from host to Pr^(3+)4f5d upon excitation at 172 nm,however,the energy transfer is absent upon X-ray excitation which is attributed to influence of defects on surface.The results indicate that BLP∶Pr^(3+) could be applied as an efficient VUV to UV-C converting material.In addition,the research is also important for designing novel fast scintillators.

关 键 词：真空紫外光 Pr^(3+)4f5d 能量传递 衰减曲线 基质发光 

分 类 号：O482.31[理学—固体物理]