Data di Pubblicazione:
2000
Abstract:
InxGa(1x)As(1-y)Ny /GaAs single quantum wells emitting at room temperature in the wavelength range 1.3–1.55 micron have been studied by photoluminescence. By increasing
temperature, we find that samples containing nitrogen have a luminescence thermal stability and a room temperature emission efficiency higher than that of the corresponding N-free heterostructures.
The temperature dependence of the PL line shape shows a progressive carrier detrapping from localized to extended states as T is increased. Finally, the extent of the thermal shift of the free exciton energy for different y indicates that the electron band edge has a localized character which increases with nitrogen content.
Tipologia CRIS:
1.1 Articolo in rivista
Keywords:
eterostrutture III-V; nitruri diluiti; quantum wells; proprietà ottiche
Elenco autori:
A., Polimeni; M., Capizzi; Geddo, Mario; M., Fisher; M., Reinhardt; A., Forchel
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