Synergistic-potential engineering enables high-efficiency graphene photodetectors for near- to mid-infrared light.

ABSTRACT: High quantum efficiency and wide-band detection capability are the major thrusts of infrared sensing technology. However, bulk materials with high efficiency have consistently encountered challenges in integration and operational complexity. Meanwhile, two-dimensional (2D) semimetal materials with unique zero-bandgap structures are constrained by the bottleneck of intrinsic quantum efficiency. Here, we report a near-mid infrared ultra-miniaturized graphene photodetector with configurable 2D potential well. The 2D potential well constructed by dielectric structures can spatially (laterally and vertically) produce a strong trapping force on the photogenerated carriers in graphene and inhibit their recombination, thereby improving the external quantum efficiency (EQE) and photogain of the dev

SUBMITTER: Jiang H 

PROVIDER: S-EPMC10858052 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature