Background
High-speed photodetectors operate in a relatively narrow wavelength range. Conversely, extremely broadband detectors suffer from slow response speed. A UW research team has developed a photodetector with both broadband detectivity and high-speed operation. Optical measurements with high spatial resolution beyond the diffraction limit is generally difficult, requiring complex near-field microscopes. By miniaturizing the detectors, a new simpler route for sub-diffraction limit measurements was developed.
Description of the invention
This is a sensor that has a very broad range of detection and a very rapid response time, a combination that is quite unique.
While there are other sensors that may target a specific range, this sensor has the capability to cover a very broad photodetection range from mid-infrared (MIR) to deep-ultraviolet (DUV).
The sensor accomplishes this by combining two semiconductors with different light response ranges (black phosphorus and 2H-MoTe2) in a unique vertical geometry to produce a broadband sensor with a high response bandwidth of 2.2 MHz.
Advantages
This new sensor has the following advantages:
Potential applications
This new sensor may be used anywhere that traditional sensors are used, including:
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