Abstract
High-temperature operating performance of p-i-p quantum dots-in-awell infrared photodetectors (QDIPs) is successfully demonstrated. The optically active region consists of 10 layers of p-doped selfassembled InAs quantum dots (QDs) asymmetrically positioned in In0.15Ga0.85As quantum wells (QWs). The dark current is suppressed by an incorporated superlattice (SL) structure composed of 10 pairs of AlGaAs/GaAs heterostructure. The very low recorded dark current makes the fabricated p-i-p QDIPs suitable for high-temperature operation. The measured photoresponse reveals broad mid-wave infrared (MWIR) detection up to 200 K.
Original language | English |
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Pages (from-to) | 1731-1732 |
Journal | Electronics Letters |
Volume | 50 |
Issue number | 23 |
DOIs | |
Publication status | Published - 2014 |
Subject classification (UKÄ)
- Condensed Matter Physics
Free keywords
- millimetre wave integrated circuits
- power combiners
- transmission
- lines
- millimetre-wave broadband waveguide based power combiner
- lossy
- waveguide-based power combiner
- lossy planar transmission lines
- reflection coefficients
- millimetre-wave broadband high solid-state
- power
- frequency 26
- 5 GHz to 40 GHz