Bipolar-barrier tunnel heterostructures for high-sensitivity mid-wave infrared photodetection.

ABSTRACT: The rapid development of modern infrared optoelectronic technology has driven a growing demand for high-sensitivity mid-wave infrared (MWIR) photodetectors capable of reliable room-temperature operation. Achieving optimal specific detectivity, a critical performance metric for MWIR photodetection, remains challenging due to inherent limitations imposed such as high dark current, low optical absorption, or both. To address these challenges, we present an approach based on a bipolar-barrier architecture featuring a black phosphorus (BP)/MoTe₂/BP tunnel heterostructure integrated with an Au reflector. This configuration delivers simultaneous electrical and optical enhancement, effectively suppressing dark currents and significantly increasing optical absorption. The bipolar-barrier

SUBMITTER: Wang F 

PROVIDER: S-EPMC12279951 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature