We have studied digital alloy InAlAs/InGaAs quantum well and quantum cascade laser
structures with cross-sectional scanning tunneling microscopy.We show the effect of rapid thermal annealing on structural properties of a digital alloy quantum well structure. Further, we compare a quantum cascade laser structure with digital alloy graded barriers to a structure with abrupt interfaces. We show that due to alloy fluctations, softening of the barriers occurs even without the digital alloy grading.
|Naam||AIP Conference Proceedings|
|ISSN van geprinte versie||0094-243X|
|Congres||conference; 12th Int. Conf. on Scanning Tunneling Microscopy/Spectroscopy and Related Techniques : STM 2003; 2003-07-21; 2003-07-25|
|Periode||21/07/03 → 25/07/03|
|Ander||12th Int. Conf. on Scanning Tunneling Microscopy/Spectroscopy and Related Techniques : STM 2003|