电子束泵浦钙钛矿纳米晶随机激射的瞬态发光特性  

Transient Luminescence Characteristics of Random Laser Emission Based on Electron Beam Pumping Perovskite Nanocrystals

作　　者：杜鹏 母一宁[1] 任航[1] 樊海波 朱焱 李彦正 IDELFONSO Monroy DU Peng;MU Yi-ning;REN Hang;FAN Hai-bo;ZHU Yan;LI Yan-zheng;IDELFONSO Monroy(College of Science,Changchun University of Science and Technology,Changchun 130022,China;Institute for Photonic Integration,Eindhoven University of Technology,Eindhoven 5600 MB,Netherlands)

机构地区：[1]长春理工大学理学院,长春130022 [2]埃因霍温理工大学集成光子研究所,荷兰埃因霍温5600 MB

出　　处：《光子学报》2020年第4期141-147,共7页Acta Photonica Sinica

基　　金：国家自然科学基金(Nos.61905026,11874091);吉林省科学技术开发项目(Nos.20180519019JH,20180804009HJ,20190701024GH);吉林省产业创新专项基金项目(Nos.2018C040-3,2019C043-6);中国科学院天文光学技术重点实验室建设(No.CAS-KLAOTKF201803);长春理工大学学科技创新基金项目(No.XJJLG-2017-01)。

摘　　要：为了满足瞬态光学系统对瞬时显像技术的要求,提出了一种基于钙钛矿纳米晶随机激射的瞬时发光方法.从CsPbBr3纳米晶薄膜的制备与表征出发,分析了该类有源薄膜的制备方法与手段.结合应用需要,设计了以微通道板为核心的电子束泵浦结构,并通过实验验证了CsPbBr3纳米晶薄膜在电子束泵浦下的激射效果,分析了其激射原理与物理现象.最后通过瞬时光泵浦的方法验证了CsPbBr3纳米晶薄膜的瞬时优势.该新型显像薄膜的瞬时探测系统中,不但具有较好的瞬态特性与时间分辨率,而且还可以利用电子束泵浦诱发激射来形成第二级的光放大,进而提升器件的整体探测能力.In order to meet the requirement of instantaneous imaging technology for transient optical system,a method of instantaneous luminescence based on perovskite nanometer crystal random maser is proposed in this paper.Based on the preparation and characterization of CsPbBr3 nanometer crystal films,the preparation methods and means of similar active films are analyzed.Combined with the application needs,this paper designed the electron beam pumping structure with microchannel plate as the core,and verified the maser effect of CsPbBr3 nanometer crystal film under electron beam pumping through experiments,and analyzed its maser principle and physical phenomenon.Finally,the instantaneous advantage of CsPbBr3 nanometer crystal thin film is verified by instantaneous optical pumping.In the instantaneous detection system of the new developed film,not only has good transient characteristics and time resolution,but also can use the electron beam pumping to induce laser to form the second stage of light amplification,thus improving the overall detection ability of the device.

关 键 词：钙钛矿纳米晶 随机激射 电子束泵浦 瞬态成像 微通道板 

分 类 号：O643.3[理学—物理化学]