Enhanced luminescence in GaInNAsSb quantum wells through variationof the arsenic and antimony fluxes
Photoluminescence efficiency was enhanced in molecular-beam-epitaxial-grown 1.55 - μ m GaInNAsSb single quantum wells through modulation of the arsenic and antimony fluxes. The arsenic-to-antimony flux ratio was found to be a key consideration at reduced group-V fluxes in maintaining the beneficial...
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Veröffentlicht in: | Applied physics letters 2006-06, Vol.88 (24), p.241923-241923-3 |
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Zusammenfassung: | Photoluminescence efficiency was enhanced in molecular-beam-epitaxial-grown
1.55
-
μ
m
GaInNAsSb single quantum wells through modulation of the arsenic and antimony fluxes. The arsenic-to-antimony flux ratio was found to be a key consideration at reduced group-V fluxes in maintaining the beneficial effects of antimony while reducing the number of point defects, most likely arsenic antisites. Samples were also characterized by high-resolution x-ray diffraction, secondary ion mass spectrometry, and low-temperature photoluminescence. These findings offer a means to substantially reduce dilute-nitride laser threshold current densities. |
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ISSN: | 0003-6951 1077-3118 |
DOI: | 10.1063/1.2213176 |