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Narrowband HgCdTe infrared photodetector with integrated plasmonic structure
Optics Letters
|May 24, 2023
Summary
This study integrates plasmonic structures into mercury cadmium telluride (HgCdTe) infrared photodetectors. The novel design significantly enhances detector performance, achieving a notable increase in peak response rate.
Area of Science:
- Optoelectronics
- Nanotechnology
- Materials Science
Background:
- Plasmonic structures enhance infrared photodetector performance.
- Integrating plasmonic structures into HgCdTe photodetectors is experimentally challenging and rarely reported.
Purpose of the Study:
- To present a novel HgCdTe infrared photodetector with an integrated plasmonic structure.
- To experimentally validate the performance enhancement offered by plasmonic structures in HgCdTe photodetectors.
Main Methods:
- Fabrication of HgCdTe infrared photodetectors with integrated plasmonic structures.
- Experimental characterization of photodetector performance, including response rate.
- Electromagnetic simulation to analyze the plasmonic structure's effect.
Main Results:
- The plasmonic-enhanced HgCdTe photodetector exhibited a distinct narrowband response.
- A peak response rate close to 2 A/W was achieved, a 34% improvement over the reference device.
- Simulation results closely matched experimental findings, confirming the plasmonic structure's efficacy.
Conclusions:
- The integrated plasmonic structure plays a crucial role in enhancing HgCdTe infrared photodetector performance.
- This work demonstrates a viable method for incorporating plasmonic structures into HgCdTe photodetectors.
- The findings pave the way for developing more efficient infrared detection technologies.
