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Type: Artigo de periódico
Title: Evidence for phase-separated quantum dots in cubic InGaN layers from resonant Raman scattering
Author: Lemos, V
Silveira, E
Leite, JR
Tabata, A
Trentin, R
Scolfaro, LMR
Frey, T
As, DJ
Schikora, D
Lischka, K
Abstract: The emission of light in the blue-green region from cubic InxGa1-xN alloys grown by molecular beam epitaxy is observed at room temperature and 30 K. By using selective resonant Raman spectroscopy (RRS) we demonstrate that the emission;is due to quantum confinement effects taking place in phase-separated In-rich quantum dots formed in the layers. RRS data show that the In content of the dots fluctuates across the volume of the layers. We find that dot size and alloy fluctuation determine the emission wavelengths.
Country: EUA
Editor: American Physical Soc
Citation: Physical Review Letters. American Physical Soc, v. 84, n. 16, n. 3666, n. 3669, 2000.
Rights: aberto
Identifier DOI: 10.1103/PhysRevLett.84.3666
Date Issue: 2000
Appears in Collections:Unicamp - Artigos e Outros Documentos

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