Abstract
We present a study on a set of AlGaAs/GaAs quantum well infrared photodetectors with various barrier widths from about 100 to 500 Å. At 77 K and for a large field-of-view (FOV) 300-K background operation, measured results on dark current, responsivity, and detectivity indicate that detectors with barrier widths larger than about 200 Å have similar performance. For 60-70 K and F/2 FOV, barriers need to be larger than about 300 Å to suppress inter-well tunneling.
Original language | English |
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Pages (from-to) | 115-121 |
Number of pages | 7 |
Journal | Infrared Physics and Technology |
Volume | 42 |
Issue number | 3-5 |
DOIs | |
Publication status | Published - 2001 Jun |
Keywords
- Design parameter
- Quantum well infrared photodetector
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics