Electron beam pumping improves the conversion efficiency of low-frequency photons radiated by perovskite quantum dots
Peng Du(杜鹏)1, Yining Mu(母一宁)1,†, Hang Ren(任航)1, Idelfonso Tafur Monroy2,‡, Yan-Zheng Li(李彦正)1, Hai-Bo Fan(樊海波)3,4,§, Shuai Wang(王帅)1, Makram Ibrahim5,¶, and Dong Liang(梁栋)1
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
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 CsPbX3 films pumped by an electron beam. Then, we simulate the spatial distribution of the electron beams in CsPbX3 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.
Fund: This work is 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), and Foundation Project of Jilin Province, China (Grant Nos. 20210402067GH, JJKH20210830KJ, JJKH20210800KJ, 20200301065RQ, 20190201188JC, and 2019C043-6).
Peng Du(杜鹏), Yining Mu(母一宁), Hang Ren(任航), Idelfonso Tafur Monroy, Yan-Zheng Li(李彦正), Hai-Bo Fan(樊海波), Shuai Wang(王帅), Makram Ibrahim, and Dong Liang(梁栋) Electron beam pumping improves the conversion efficiency of low-frequency photons radiated by perovskite quantum dots 2023 Chin. Phys. B 32 048704
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