Black Phosphorus Detectors for Room Temperature Mid-Infrared Sensing
Abstract
Mid-wavelength infrared (MWIR) detection is of critical significance to a wide range of DoD technological fields including night vision, hyperspectral imaging and sensing, free-space communications, as well as surveillance and tracking. Recently, black phosphorus (BP) has been studied as an emerging semiconductor material for MWIR application that combines strong mid-IR optical response with excellent transport properties and tunable bandgap, with the potential of realizing high performance high speed detection at the mid-IR wavelength range, direct silicon integration, and room-temperature operation. This research program aims to study new detector device mechanisms based on black phosphorus to establish the technical foundation for realizing high performance black phosphorus MWIR detectors. The objectives of the proposed research activities include: (1) to develop in-depth understanding of the carrier transport in black phosphorus through novel ultrafast imaging technique and studying the impact of contacts junctions and material interfaces on black phosphorus detector performance at the mid-IR wavelength range; (2) to model, design, fabricate and integrate advanced light-trapping structures essential for optimizing black phosphorus thin film absorption in the mid-IR wavelength; and (3) to investigate new detector device concepts based on black phosphorus to realize ultralow noise mid-IR detection.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Mar 21, 2019
- Source ID
- W911NF1910111
Entities
People
- Han Wang
Organizations
- Army Contracting Command
- United States Army
- University of Southern California