http://www.cnr.it/ontology/cnr/individuo/prodotto/ID178812
Long wavelength emission in InxGa1-xAs quantum dot structures grown in a GaAs barrier by metalorganic chemical vapor deposition (Articolo in rivista)
- Type
- Label
- Long wavelength emission in InxGa1-xAs quantum dot structures grown in a GaAs barrier by metalorganic chemical vapor deposition (Articolo in rivista) (literal)
- Anno
- 2004-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1063/1.1652255 (literal)
- Alternative label
A.Passaseo; V. Tasco; M. De Giorgi; M. T. Todaro; M. De Vittorio; R. Cingolani (2004)
Long wavelength emission in InxGa1-xAs quantum dot structures grown in a GaAs barrier by metalorganic chemical vapor deposition
in Applied physics letters; American Institute Of Physics (AIP), Melville (Stati Uniti d'America)
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- A.Passaseo; V. Tasco; M. De Giorgi; M. T. Todaro; M. De Vittorio; R. Cingolani (literal)
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- Titolo
- Long wavelength emission in InxGa1-xAs quantum dot structures grown in a GaAs barrier by metalorganic chemical vapor deposition (literal)
- Abstract
- We demonstrate a method to obtain room temperature long wavelength emission from InGaAs
quantum dots ~QDs! growth directly into a binary GaAs matrix. The wavelength is tuned from 1.26
up to 1.33 mm by varying the V/III ratio during growth of the GaAs cap layer, without using a
seeding layer or InGaAs wells. Strong improvement in terms of line-shape narrowing and efficiency
is obtained. In addition to the shift in wavelength we observe an impressive reduction of temperature
dependent quenching of the emission efficiency, which decreases only by a factor of 3 between
cryogenic temperatures and room temperature, very good for QD structures emitting at 1.3 mm.
Photoluminescence spectroscopy and theoretical modeling were combined for interpretation of the
results. (literal)
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