Sr6Ca4(PO4)6F2∶Eu^2+,Mn^2+的发光性能调控  

Manipulation of Luminescence Properties of Sr6Ca4(PO4)6F2∶Eu^2+,Mn^2+

作　　者：朱红波 师学丽 吴素玉 鲍若彤 马国权 李月彬 李盼来[1] 杨志平[1] 王志军[1] ZHU Hong-bo;SHI Xue-li;WU Su-yu;BAO Ruo-tong;MA Guo-quan;LI Yue-bin;LI Pan-lai;YANG Zhi-ping;WANG Zhi-jun(College of Physics Science & Technology, Hebei University, Baoding 071002, China)

机构地区：[1]河北大学物理科学与技术学院,河北保定071002

出　　处：《发光学报》2020年第6期670-678,共9页Chinese Journal of Luminescence

基　　金：国家自然科学基金(51672066,51902080);河北省人才工程培养项目(A201902005);河北省自然科学基金重点项目(E2019201223);河北省杰出青年基金(A2018201101);大学生创新创业训练计划项目(201910075019)资助。

摘　　要：以Sr6Ca4(PO4)6F2为基质、Eu2+/Mn2+为掺杂离子、H3BO3为助剂,利用固相法制备了系列发光材料。由X射线衍射图可知,材料的相是单一的。利用Mn2+离子的浓度猝灭效应以及Eu2+-Mn2+能量传递过程中存在的“瓶颈效应”和“反瓶颈效应”解释了Sr6Ca4(PO4)F2∶Eu2+,Mn2+量子效率降低的原因。通过添加助剂H3BO3及调控阳离子的方式有效地提高了Sr6Ca4(PO4)F2∶Eu2+,Mn2+的量子效率,采用精修手段分析了发光中心所处晶体场环境的变化情况,并解释了两种调控过程中Eu2+和Mn2+发射强度变化的原因。In this work,the Sr6Ca4(PO4)6F2 is selected as host compound.The Eu2+/Mn2+ions are selected as doped ions.H3BO3 is used as agent.The phosphors are prepared by the solid-state method.The single-phase was proved by the XRD pattern of phosphor.There are two reasons for the decrease of quantum efficiency of Sr6Ca4(PO4)F2∶Eu2+,Mn2+.One is the concentration quenching effect of Mn2+,and the other is“bottleneck effect”and“anti-bottleneck effect”in the energy transfer of Eu2+-Mn2+.The quantum efficiency of Sr6Ca4(PO4)F2∶Eu2+,Mn2+can be enhanced by doping auxiliary agent H3BO3 and regulating cations.For the luminescent centers of Eu2+and Mn2+,their crystal field environments can be analyzed by the data of refinement,and their emission intensities in the two manipulation methods can be also explained.

关 键 词：发光 Sr6Ca4(PO4)6F2 能量传递 阳离子替换 

分 类 号：O482.31[理学—固体物理]