High discrimination infrared polarimetry via intrinsic anisotropic photogating in black phosphorus meta-polarization detectors.

ABSTRACT: Filterless miniaturized polarization photodetectors are essential for next-generation ultracompact optical and optoelectronic systems. However, achieving high polarization discrimination and high sensitivity over a broad wavelength range based on a simple device structure remains difficult. Here, we address this challenge by leveraging a band modulation effect induced by intrinsic anisotropic photogating. We realize a meta-polarization-detector consisting of a black phosphorus (BP) flake partially supported by SiO₂ with trap states and partially supported by hexagonal boron nitride (hBN) with almost no trap states. The band distribution and hence the self-powered photocurrent are significantly influenced by light illumination in a polarization dependent manner. The polarization

SUBMITTER: Bu Y 

PROVIDER: S-EPMC12630841 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature