Showcasing a self-powered photoelectrochemical photodetector with ultrasonically exfoliated SnSe₂ nanosheets

This article details a liquid-phase exfoliation method for synthesizing SnSe₂ nanosheets and the fabrication of a Photoelectrochemical-type photodetector (PEC-PD) using an electrophoretic technique. The scanning electron microscope was employed to analyze the surface topography of the grown film. The synthesized SnSe₂ nanosheets exhibit a hexagonal crystal structure with an A_1g vibrational mode. The photoresponse properties of the SnSe₂ film-based PEC photodetector were investigated under various colored lights, revealing a peak responsivity of 1359.60 nA/W under 100 mW/cm² power intensity of white light with self-bias at room temperature. This study represents a significant stride in advancing photoelectrochemical cells and optoelectronics for sustainable energy production.