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.
作者
朱红波
师学丽
吴素玉
鲍若彤
马国权
李月彬
李盼来
杨志平
王志军
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)
出处
《发光学报》
EI
CAS
CSCD
北大核心
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。
