Abstract
We report operation up to 270 K of a strain-compensated AlAs In0.84 Ga0.16 AsAlAs In0.52 Al0.48 As double barrier quantum well infrared photodetector, grown on an InP substrate. The n=1 to n=2 intersubband transition gives a peak detection wavelength of 2.09 μm at 77 K which is in good agreement with the calculated value for a 3 nm quantum well. The conduction band discontinuity between In0.52 Al0.48 As and In0.84 Ga0.16 As is calculated to be 0.675 eV, which offers the possibility of room temperature operation for optimized detectors. © 2005 American Institute of Physics.
Original language | English |
---|---|
Article number | 192113 |
Pages (from-to) | 1-3 |
Number of pages | 2 |
Journal | Applied Physics Letters |
Volume | 87 |
Issue number | 19 |
DOIs | |
Publication status | Published - 7 Nov 2005 |