Abstract
The ultra fast carrier dynamic in GaN/AlGaN quantum cascade detector was
investigated using a time-resolved bias-lead monitoring technique. It is
demonstrated that the intrinsic speed limitation, governed by the
carrier transit time, is smaller than 1 ps, corresponding to a frequency
cut off above 200 GHz.
Original language | English GB |
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Article number | 202111 |
Pages (from-to) | 202111 |
Journal | Applied Physics Letters |
Volume | 99 |
Issue number | 20 |
DOIs | |
State | Published - 1 Nov 2011 |
Externally published | Yes |
Keywords
- aluminium compounds
- gallium compounds
- III-V semiconductors
- infrared detectors
- semiconductor quantum wells
- wide band gap semiconductors
- Bolometers
- infrared submillimeter wave microwave and radiowave receivers and detectors