The Effect of SnO2 and ZnO on the Performance of Perovskite Solar Cells

Abstract

The efficiency of perovskite solar cells is studied through the Analysis of Microelectronic and Photonic Structures (AMPS) and the Solar Cell Capacitance Simulator (SCAPS) simulation software programs. The programs serve to determine how the thickness of HTM, ETM and perovskite absorber layers affects the performance of solar cells. An investigation is also conducted on how temperature, electron density concentration and perovskite defect density affect the fill factor (FF), performance (PCE), short-circuit current density (JSC), and open-circuit voltage (VOC). Then, J–V characteristics are calculated using ZnO and SnO2 as two types of ETM. As a result, optimal values are achieved for the thickness of HTM, ETM and absorber layers. It is also indicated that an increase in the defect density of perovskites can reduce the performance of solar cells. Another important finding of the study is that ZnO can possibly replace the expensive SnO2 for better ETM conversion performance.