Mn掺杂CsPbCl_(3)/Cs_(4)PbCl_(6)复合材料的制备及发光机理  

Synthesis and luminescence mechanism of Mn-doped CsPbCl_(3)/Cs_(4)PbCl_(6)composites

作　　者：杨祥策 张恒 刘晨晖 朱梦轩 王凤和[1] 郭颖楠[1] YANG Xiangce;ZHANG Heng;LIU Chenhui;ZHU Mengxuan;WANG Fenghe;GUO Yingnan(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：《河北大学学报（自然科学版）》2022年第6期611-617,共7页Journal of Hebei University(Natural Science Edition)

基　　金：河北省自然科学基金资助项目(F2020201051);中央引导地方项目(216Z104G);河北大学大学生创新创业训练计划项目(2022371)。

摘　　要：为开发适合产业化的零维钙钛矿的合成方法,利用超声法制备了Mn^(2+)掺杂的CsPbCl_(3)/Cs_(4)PbCl_(6)复合物(CCM),并讨论了CCM的发光机理.在近紫外激发下,CCM具有明亮的红色发光,发射谱具有3个发射峰,分别位于606 nm(Mn^(2+))、414 nm(CsPbCl_(3))和351 nm(Cs_(4)PbCl_(6)).CCM中存在CsPbCl_(3)、Cs_(4)PbCl_(6)对Mn^(2+)的能量传递过程.通过改变前驱物中MnCl_(2)/PbCl_(2)投料比可以调节CCM中Cs_(4)PbCl_(6)对CsPbCl_(3)的钝化,调控CCM中CsPbCl_(3)对Mn^(2+)的能量传递以及Mn^(2+)的红光发射强度.In order to develope synthesis methods suitable for industrial production.In this work,Mn-doped CsPbCl_(3)/Cs_(4)PbCl_(6)(CCM)composites were synthesized by ultrasonic method and their luminescence mechanism were investigated.CCM has a bright red emission under near-ultraviolet excitation,and there were three emission peaks located at 606 nm(Mn^(2+)),414 nm(CsPbCl_(3)),and 351 nm(Cs_(4)PbCl_(6)).Energy transfer from CsPbCl_(3)to Mn^(2+)and from Cs_(4)PbCl_(6)to Mn^(2+)were presented in CCM.By varying the MnCl 2/PbCl 2 ratio in the precursor,the passivation of Cs_(4)PbCl_(6)on CsPbCl_(3),the energy transfer from CsPbCl_(3)to Mn^(2+)and the red-light emission intensity of Mn^(2+)were modulated.

关 键 词：Cs_(4)PbCl_(6) MN掺杂 钙钛矿 

分 类 号：O482.31[理学—固体物理]