Ultrathin Bi<sub>2</sub>O<sub>2</sub>S nanosheet near-infrared photodetectors
Basant Chitara, Tej B. Limbu, Jason D. Orlando, Yongan Tang, Fei Yan
Abstract
Solution-processed Bi<sub>2</sub>O<sub>2</sub>S nanosheets demonstrate high-efficiency NIR photodetection with a responsivity of 4 A/W, an external quantum efficiency of 630%, and a normalized photocurrent-to-dark-current ratio of 1.3 × 10<sup>10</sup> per watt.
Topics & Concepts
PhotodetectionPhotodetectorMaterials sciencePhotocurrentOptoelectronicsNanosheetBismuthExfoliation jointInfraredSpecific detectivityQuantum efficiencyPhotoconductivityPhotoelectric effectNanotechnologyDark currentGrapheneOpticsPhysicsMetallurgy2D Materials and ApplicationsMXene and MAX Phase MaterialsPerovskite Materials and Applications