Long and Very Long Wavelength InAs/InAsSb Superlattice Complementary Barrier Infrared Detectors

Ting David Z.,Khoshakhlagh Arezou,Soibel Alexander,Keo Sam A.,Fisher Anita M.,Pepper Brian J.,Höglund Linda,Rafol Sir B.,Hill Cory J.,Gunapala Sarath D.

APPLIED PHYSICS LETTERS（2024）

California Institute of Technology

Cited 35|Views7

Abstract

We describe the challenges for long- and very long-wavelength InAs/InAsSb type-II strained-layer superlattice infrared detectors, and provide an overview of progress in device architecture development for addressing them. Specifically, we have explored the complementary barrier infrared detector (CBIRD) that contains p-type InAs/InAsSb T2SLS absorbers for enhancing quantum efficiency, while also suppressing surface shunt current. We describe selected device results, and also provide references to additional results and more in-depth discussions.

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Key words

Infrared detector,unipolar barrier,type-II superlattice,InAs/InAsSb superlattice

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