ISSN:
0392-6737
Schlagwort(e):
Optical properties of thin films, surfaces, and thin layer structures (including superlattices, heterostructures, and intercalation compounds)
;
Conference proceedings
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Physik
Notizen:
Summary We have studied modulation spectra related to the intersubband transitions at 300 K and 20 K from an In GaAs/GaAs-strained asymmetric triangular quantum well (ATQW) heterostructures fabricated by molecular beam epitaxy using the digital alloy compositional grading (DACG) method. A careful analysis of the spectra has led to the identification of various excitonic transitions,mnh(1), between them-th conduction band state to then-th, heavy (light)-hole band state. Comparison of the observed intersubband transitions with a theoretical calculation based on the envelope, function model, including the effects of strain provided a self-consistent verification that the DACG method produced the intended ATQW composition profile.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF02457233
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