Electron beam pumping improves the conversion efficiency of low-frequency photons radiated by perovskite quantum dots  

作　　者：杜鹏 母一宁 任航 Idelfonso Tafur Monroy 李彦正 樊海波 王帅 Makram Ibrahim 梁栋 Peng Du;Yining Mu;Hang Ren;Idelfonso Tafur Monroy;Yan-Zheng Li;Hai-Bo Fan;Shuai Wang;Makram Ibrahim;Dong Liang(School of Physics,Changchun University of Science and Technology,Changchun 130022,China;Institute for Photonic Integration,Eindhoven University of Technology,Eindhoven 5600 MB,Netherlands;Science and Technology on Low-Light-Level Night Vision Laboratory,Xi’an 710018,China;Kunming Institute of Physics,Kunming 650221,China;Solar and Space Research Department,National Research Institute of Astronomy and Geophysics(NRIAG),Cairo 11421,Egypt)

机构地区：[1]School of Physics,Changchun University of Science and Technology,Changchun 130022,China [2]Institute for Photonic Integration,Eindhoven University of Technology,Eindhoven 5600 MB,Netherlands [3]Science and Technology on Low-Light-Level Night Vision Laboratory,Xi’an 710018,China [4]Kunming Institute of Physics,Kunming 650221,China [5]Solar and Space Research Department,National Research Institute of Astronomy and Geophysics(NRIAG),Cairo 11421,Egypt

出　　处：《Chinese Physics B》2023年第4期754-761,共8页中国物理B（英文版）

基　　金：funded by the National Natural Science Foundation of China(Grant Nos.61905026,61703057,11874091,and 61905023);the National Key Research and Development Program of China(Grant No.2018YFB1800303);Construction Project of Key Laboratory of Astronomical Optics Technology of Chinese Academy of Sciences(Grant No.CAS-KLAOTKF201803);Chongqing Natural Science Foundation of China(Grant No.CSTC2021JCYJMSXMX0500);Foundation Project of Jilin Province,China(Grant Nos.20210402067GH,JJKH20210830KJ,JJKH20210800KJ,20200301065RQ,20190201188JC,and2019C043-6)。

摘　　要：This research argues that using an electron beam with high kinetic energy to pump perovskite quantum dots can significantly boost the efficiency of the low-frequency photon radiation conversion.Firstly,we measure the random lasing threshold and luminescence threshold of CsPbX_(3)films pumped by an electron beam.Then,we simulate the spatial distribution of the electron beams in CsPbX_(3)films.Combined with the above data,a low-frequency photon radiation conversion model based on the electron pumped perovskite quantum dots is presented.This could be a way to create a terahertz source with a high-power output or to multiply the terahertz power.

关 键 词：electron beam perovskite quantum dots THZ 

分 类 号：O441.4[理学—电磁学]