What is it about?

The mid infrared (MIR) spectral range host a plethora of gas absorption lines. Therefore, capable MIR detectors operating in this wavelength range are crucial for e.g. environmental, medical or industrial applications. HgCdTe-based devices are the current state of the art MIR photodetectors. We show results on an alternative material system and device architecture that is projected to outperform HgCdTe-based devices.

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Why is it important?

The InAs/GaSb material system has already shown promising results as detectors in the MIR region to substitute detectors that are based on the HgCdTe material that is non compliant with the RoHS directive. The presented InAs/InAsSb detectors could solve some of the remaining issues and drawbacks that InAs/GaSb detectors still face. The detector can be adjusted for various applications at different wavelengths.

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This page is a summary of: Interband cascade infrared photodetectors based on Ga-free InAs/InAsSb superlattice absorbers, Applied Physics Letters, July 2022, American Institute of Physics, DOI: 10.1063/5.0094166.
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