Hot-Pressing Annealing-Induced Light Utilization Enhancement and Crystallinity Optimization Enable High-Performance Narrowband Ultraviolet Photodetectors for Real-Time Ultraviolet Radiation Monitors.

ABSTRACT: The real-time ultraviolet (UV) radiation monitor can protect personal healthcare by real-time monitoring UV radiation, highlighting the urgent need for high-performance self-powered narrowband UV detectors that can selectively response to UVA and UVB wavelengths. Existing narrowband photodetectors often rely on a surface defect-assisted charge collection narrowing strategy, which inevitably compromises device performance. In this study, a hot-pressing (HP) annealing strategy is introduced to prepare high-quality Cs₃Cu₂I₅ films with large grains vertically spanning the entire thickness. The HP annealing reduces the defect density and light loss in the 280-375 nm range in the Cs₃Cu₂I₅ films, and enhances the charge transport a

SUBMITTER: Ma J 

PROVIDER: S-EPMC12752576 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature