135 / 2023-09-20 21:14:33

The Quantum Efficiency Calculation of Perovskite Materials Based on an Extended Moments Model

Photoelectron Emission, Quantum Efficiency,Perovskite Materials

Special Sessions > SS17 - Principles, methods and applications of photoelectron spectroscopy analytical instruments

This paper shows the theoretical analysis, model establishment, and numerical computation of photoelectron emission of perovskites under the irradiation of vacuum ultraviolet light. Based on the three-step process of photoelectron emission, the mathematical models of semiconductor are established, and the theoretical formula of its quantum efficiency is put forward. The calculation results show that the quantum efficiency of CsPbI₃ is 9.8×10^-6 to 6.25×10^-2 with the incident photon energy of 6.25~10eV and that of CsPbBr₃ is 5.0×10^-10 to 6.42×10^-3 with the incident photon energy of 6.56~10eV. Compared with the experimental results of the literature, the quantum efficiency calculated is consistent.