Glass texturing affects optical properties of perovskite solar cells: Comparison study between mesoscopic and planar structure

Glass texturing is an effective method for changing the surface morphology to improve light trapping. In this paper, the technique is applied to hybrid inorganic-organic solar cells (perovskite solar cell) to enhance light trapping and current density. We optimized wet chemical etched fluorine doped tin oxide (FTO) coated glass substrates using a simple treatment then compared the mesoscopic and planar structures. Thus, we present the implication study of the wet etching process with a random pattern surface that enables punch light scattering and ideally balanced the optical and electrical properties of the perovskite solar cell. As a result, we achieved short-circuit current density for 26.5 mA/cm² and PCE for 15.2 %.