Electron beam pumping improves the conversion efficiency of low-frequency photons radiated by perovskite quantum dots. (1st April 2023)

• Record Type: Journal Article
• Authors: Du 杜, Peng 鹏; Mu 母, Yining 一宁; Ren 任, Hang 航; Tafur Monroy, Idelfonso; Li 李, Yan-Zheng 彦正; Fan 樊, Hai-Bo 海波; Wang 王, Shuai 帅; Ibrahim, Makram; Liang 梁, Dong 栋
• Is Part Of: Chinese physics B. Volume 32:Number 4(2023)
• Publication Date: 2023-04-01
• Subjects: electron beam -- perovskite quantum dots -- THz; 87.50.U- -- 73.21.La; Physics -- Periodicals; Physics; Periodicals; 530.05
• DOI: 10.1088/1674-1056/ac8348
• Languages: English
• ISSNs: 1674-1056

Abstract

Abstract : 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 CsPb X 3 films pumped by an electron beam. Then, we simulate the spatial distribution of the electron beams in CsPb X 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.