Enhancing Hot-Electron Photodetection of a TiO₂/Au Schottky Junction by Employing a Hybrid Plasmonic Nanostructure.

ABSTRACT: Hot-electron photodetectors (HEPDs) are triggering a strong surge of interest in applications of image sensors and optics communication, since they can realize photoelectric responses when the incident photon energy is lower than the bandwidth of the semiconductor. In traditional HEPD systems, the metal layers are dressed with regular gratings, which can only excite plasmonic resonance over a narrow bandwidth, limiting the hot-electron photoelectric effect. To break this limitation, hybrid plasmonic nanostructures should be applied in HEPDs. Here, we propose a TiO₂ based HEPD device incorporated with a hybrid plasmonic nanostructure, which consists of Au nanoparticles (Au NPs) and a conformal transparent Au film. With the assistance of the plasmonic resonances excited in this hy

SUBMITTER: Wang W 

PROVIDER: S-EPMC9025816 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature