Highly sensitive broadband photodetector based on PtSe₂ photothermal effect and fiber harmonic Vernier effect.

ABSTRACT: Platinum diselenide (PtSe₂), a two-dimensional material, has shown exceptional promise in photodetection applications because of its air stability, high carrier mobility, and layer-tunable bandgap. However, conventional photoconductive modes face challenges with high dark currents. To address this limitation, all-optical fiber detection technology with high sensitivity and response, has emerged as a promising approach for developing PtSe₂, based devices. In this study, a high-sensitivity broadband photodetector based on PtSe₂ with a cascaded Fabry-Pérot interferometer (FPI) is proposed, which utilises the broad spectral absorption property of PtSe₂ and the interference enhancement mechanism of cascaded F-P cavities to achieve high-sensitivity bro

SUBMITTER: Gao Y 

PROVIDER: S-EPMC12717942 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature