Publikationsrepositorium - Helmholtz-Zentrum Dresden-Rossendorf
2 PublikationenImpact of interface formation on intersubband transtitions in MBE GaInAs:Si/AlAsSb multiple coupled DQWs
Biermann, K.; Kuenzel, H.; Tribuzy, C. V.-B.; Ohser, S.; Schneider, H.; Helm, M.
Abstract
The impact of indium segregation and diffusion of antimony on intersubband transition (IST) wavelengths in AlAsSb/GaInAs multiple quantum well (MQW) and double quantum well (DQW) structures has been evaluated. By means of 8-band k·p calculations the effect of non-abrupt interfaces on IST wavelengths in such structures is elucidated. Comparison of measured and calculated absorption spectra reveals the sacrificial character of AlAs interfacial layers for diffused or segregated atoms and allows for estimating the limits of the intersubband approach as regards short wavelength relaxation transitions.
Keywords: intersubband transition; quantum well; AlAsSb/GaInAs; diffusion; segregation
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Vortrag (Konferenzbeitrag)
19th International Conference on Indium Phosphide and Related Materials (IPRM'07), 14.-18.05.2007, Matsue, Japan -
Beitrag zu Proceedings
19th International Conference on Indium Phosphide and Related Materials (IPRM'07), 14.-18.05.2007, Matsue, Japan
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