Design and simulation of perovskite solar cell using graphene oxide as hole transport material

Abstract

Hole transport material (HTM) plays an essential function in perovskite solar cells (PSCs). The utilization of polymer materials has been studied but with little effectiveness, typically resulting in a lower conversion efficiency than Spiro-OMeTAD. Spiro-OMeTAD requires comparable dopants and additives, which is a source of perovskite instability. Poor stability and higher design costs of spiro-OMeTAD require an alternatives HTM. In this study, a numerical simulation analysis on the PSCs performance with graphene oxide (GO) as HTM is conducted using a SCAPS-1D. The simulation was performed to evaluate the effect of various parameters on the output of devices, such as perovskite thickness, HTM thickness, and interface defect. The optimized result shows short-circuit current density (JSC) of 24.44 mA.cm-2, open- circuit voltage (VOC) of 1.04 V, fill factor (FF) of 73.12%, and power conversion efficiency (PCE) of 18.53%. This result indicates that it is feasible to use GO as HTM as a potential alternative for the costly Spiro-OMeTAD.