A novel of quadruple-cation perovskite absorber has been studied. In this research, experimental current density–voltage (J-V) and external quantum efficiency (EQE) curves of a 20.56%-efficient perovskite solar cell were simulated by the device simulator entitled Solar Cell Capacitance Simulator (SCAPS). At first, uniform and single-graded models for band gap of the perovskite have been considered. The second model is closer to the experiment. Then, the efficiency of the solar cell was improved by studying the effects of electron and hole defect densities in the perovskite absorber and the effects of conduction and valence band offsets in both sides of perovskite absorber. Successively, the effects of doping concentration of hole and electron transport and the perovskite absorber layers, and finally the effects of capture cross section have been investigated. After optimizing the parameters, efficiency is reached to 29.07%.

研究了一种新型的四阳离子钙钛矿吸收剂。在这项研究中，实验电流密度-电压（J - V）和效率为20.56％的钙钛矿型太阳能电池的外部量子效率（EQE）曲线通过名为“太阳能电池电容模拟器（SCAPS）”的设备模拟器进行了模拟。首先，考虑了钙钛矿带隙的统一和单级模型。第二种模型更接近实验。然后，通过研究钙钛矿吸收体中电子和空穴缺陷密度的影响以及钙钛矿吸收体两侧的导带和价带偏移的影响，提高了太阳能电池的效率。依次研究了空穴，电子传输和钙钛矿吸收层的掺杂浓度的影响，最后研究了俘获截面的影响。优化参数后，效率达到29.07％。