[1PS-143]
우수논문발표상 응모자AgBiS₂ Nanocrystal Photoanodes for Visible-Light-Driven and Sustainable Photoelectrochemical Water Splitting
발표자윤수진 (대구경북과학기술원)
연구책임자최종민 (대구경북과학기술원)
Abstract
The transition to sustainable energy has become essential due to the rapid depletion of fossil fuels. Among various approaches, photoelectrochemical water splitting is gaining attention as a viable method for solar hydrogen production. This study presents a new strategy for designing a visible-light-responsive photoanode based on AgBiS₂ nanocrystals,which are free of toxic heavy metals and offer a more environmentally benign alternative to conventional materials. The AgBiS₂ NC photoanode, capped with halide-thiol ligands, shows significantly enhanced photocurrent density (J_ph) under both 1 sun and visible light, surpassing TiO₂ and Bi₂S₃ photoanodes. This improvement is attributed to more efficient electron extraction and reduced interfacial charge transfer resistance. Notably, 91% of the J_ph originates from the visible to near-infrared region, underscoring the strong potential of AgBiS₂ NCs as eco-conscious and high-performing photoabsorbers for next-generation PEC water splitting.