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

Abstract

This research argues that using an electron beam with high kinetic energy to pump perovskite quantum dots can significantly boost the efficiency of 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 electron beams in CsPbX3 films. Combined with the above data, a low-frequency photon radiation conversion model based on 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 terahertz power.