Low dark current in mid-infrared type-II superlattice heterojunction photodiodes
Infrared Physics & Technology（2017）
Abstract
•Dark current reduction in InAs/GaSb T2SL heterojunction diodes for the MWIR.•The dark current was reduced by a factor of over 100 compared to a pn-homojunction.•The photo current remains unaffected by introducing the heterojunction.•Lowest reported dark current for T2SL-detectors operating in the MWIR.
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Key words
InAs/GaSb type-II superlattice,T2SL,MWIR,Infrared detector,Heterojunction,Dark current density
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