Abstract
Gex single quantum wells (x=0.19) grown by rapid thermal chemical vapor deposition at 625 °C. A well-resolved strong excitonic luminescence with TO-phonon and no-phonon transitions with a full width at half-maximum as low as 6 meV is observed for a quantum well of 98 A. The photoluminescence emission shows a significant blue shift and a broadening with excitation intensity. The results are analysed in terms of localization of photoinduced charge carriers at the heterointerfaces.
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More From: Applied Physics A: Materials Science & Processing
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