Reliability Test of 21% Efficient Flexible Perovskite Solar Cell Under Concave, Convex and Sinusoidal Bending

Abstract

Perovskite solar cells (PSCs) have been considered the new rising star in photovoltaic (PV) technology. However, flexibility is the major limiting factor in PSCs for restraining the potential for wearable applications. Therefore, the flexible-PSC (F-PSC) design is reported and simulated using the Silvaco-TCAD tool. Different bending modes, such as concave, convex, and sinusoidal, including planar structure, have been reported to examine the performance of the proposed device. The influence of bending radius (5 to 20 mm) and bending amplitude (0.5 to 2 mm) is studied and analyzed to optimize the performance of the F-PSC device. It has been obtained that the planar F-PSC delivers higher PV parameters: short-circuit current density (JSC) of 21.9 mA/cm, open-circuit voltage (VOC) of 1.18 V, fill factor (FF) of 79.31% and PCE of 20.5%. Simulated results are obtained regarding PV parameters, JV, and EQE characteristics. The findings of the reported study would significantly provide a way to explore the F-PSC performance with better-bending properties.