The flexible perovskite solar cell (f‐PSC) has witnessed better portability, stability, and durability than any rigid perovskite solar cell (PSC), which is in the application of wearable electronic instruments. In our study the working device, which has ITO/TiO 2 /Cs 2 TiBr 6 /CuSCN/Ag‐based planar structure, was studied using the Silvaco TCAD simulator using three various bending states: concave, convex, and sinusoidal mode. Such a proposed f‐PSC device was bent for concave and convex modes at a 5–20 mm bending radius and for sinusoidal mode at a 0.5–2 mm bending amplitude (BA). For our f‐PSC, the optimum photovoltaic (PV) performance was recorded at a 20 mm bending radius for the concave and convex bending mode as follows: J SC (current density) 25.8 and 25.3 mA/cm 2 , V OC (open circuit voltage) 1.08 and 1.07 V, power conversion efficiency (PCE) 12.39% and 14.11%, and fill factor 52% and 54%, respectively. Also, the JV plot and other performance parameter graphs suggest that for concave and convex bending the device performance increased from lower to higher (5–20 mm) bending radius, and for sinusoidal bending the device performance increased from higher to lower (2–0.5 mm) BA. The outcomes of the investigated report show the impact of various modes of bending on the PV performance of the flexible‐PSC. Also, material strength and material structure were assessed under both bent and unbent conditions of the PSC material. Higher material strain was observed for the bent mode compared to the unbent mode, and the crystallite size is almost the same (15 nm) for both bending modes. The zeta potential value of the PSC material is 16.81 mV. The single‐step bend of the fabricated PSC device showed PCE 1.86%, which is slightly less than the unbent fabricated PSC device’s PCE of 1.98%.
Chakraborty et al. (Sun,) studied this question.