High performance type-II InAs/GaSb superlattice infrared photodetectors with a short cut-off wavelength

• Autorzy: Delmas Marie , Ramos David , Ivanov Ruslan , Žurauskaitė Laura , Evans Dean , Rihtnesberg David , Almqvist Susanne , Becanovic Smilja , Costard Eric , Höglund Linda

Identyfikatory

DOI

10.24425/opelre.2023.144555

• Konferencja: Quantum Structure Infrared Photodetectors - QSIP : International Conference 2020/2022 (11 ; 2022 ; Kraków, Poland)
• Języki publikacji: EN

Abstrakty

EN

This work investigates the potential of InAs/GaSb superlattice detectors for the shortwavelength infrared spectral band. A barrier detector structure was grown by molecular beam epitaxy and devices were fabricated using standard photolithography techniques. Optical and electrical characterisations were carried out and the current limitations were identified. The authors found that the short diffusion length of ~1.8 µm is currently limiting the quantum efficiency (double-pass, no anti-reflection coating) to 43% at 2.8 µm and 200 K. The dark current density is limited by the surface leakage current which shows generation-recombination and diffusion characters below and above 195 K, respectively. By fitting the size dependence of the dark current, the bulk values have been estimated to be 6.57·10ˉ⁶ A/cm² at 200 K and 2.31·10ˉ⁶ A/cm² at 250 K, which is only a factor of 4 and 2, respectively, above the Rule07.

Słowa kluczowe

EN

infrared detectors; short-wavelength infrared; InAs/GaSb superlattice; type-II superlattice

• Wydawca: Stowarzyszenie Elektryków Polskich ; Polska Akademia Nauk ; Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
• Czasopismo: Opto-Electronics Review
• Rocznik: 2023
• Tom: Vol. 31, Special Issue
• Strony: art. no. e144555
• Opis fizyczny: Bibliogr. 39 poz., wykr., rys.

Twórcy

autor

Delmas Marie

• IRnova AB, Isafjordsgatan 22, Kista 164 40, Sweden

autor

Ramos David

• IRnova AB, Isafjordsgatan 22, Kista 164 40, Sweden
• School of Electrical Engineering and Computer Science KTH Royal Institute of Technology, Isafjordsgatan 22, Kista 164 40, Sweden

autor

Ivanov Ruslan

• IRnova AB, Isafjordsgatan 22, Kista 164 40, Sweden

autor

Žurauskaitė Laura

• IRnova AB, Isafjordsgatan 22, Kista 164 40, Sweden

autor

Evans Dean

• IRnova AB, Isafjordsgatan 22, Kista 164 40, Sweden

autor

Rihtnesberg David

• IRnova AB, Isafjordsgatan 22, Kista 164 40, Sweden

autor

Almqvist Susanne

• IRnova AB, Isafjordsgatan 22, Kista 164 40, Sweden

autor

Becanovic Smilja

• IRnova AB, Isafjordsgatan 22, Kista 164 40, Sweden

autor

Costard Eric

• IRnova AB, Isafjordsgatan 22, Kista 164 40, Sweden

autor

Höglund Linda

• IRnova AB, Isafjordsgatan 22, Kista 164 40, Sweden

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).