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Luminescence studies on nitride quaternary alloys double quantum wells

Rodrigues, S.C.P. ; dos Santos, O.F.P. ; Scolfaro, L.M.R. ; Sipahi, G.M. ; da Silva, E.F.

Applied surface science, 2008-09, Vol.254 (23), p.7790-7793 [Periódico revisado por pares]

Amsterdam: Elsevier B.V

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Título:
Luminescence studies on nitride quaternary alloys double quantum wells
Autor: Rodrigues, S.C.P. ; dos Santos, O.F.P. ; Scolfaro, L.M.R. ; Sipahi, G.M. ; da Silva, E.F.
Assuntos: AlInGaN quaternary alloys ; Condensed matter: electronic structure, electrical, magnetic, and optical properties ; Double quantum wells ; Exact sciences and technology ; Nitride semiconductors ; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation ; Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures ; p-Type doping ; Photoluminescence ; Physics ; Quantum wells
É parte de: Applied surface science, 2008-09, Vol.254 (23), p.7790-7793
Notas: ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
Descrição: We present theoretical photoluminescence (PL) spectra of undoped and p-doped Al x In 1− x− y Ga y N/Al X In 1− X− Y Ga Y N double quantum wells (DQWs). The calculations were performed within the k.p method by means of solving a full eight-band Kane Hamiltonian together with the Poisson equation in a plane wave representation, including exchange–correlation effects within the local density approximation. Strain effects due to the lattice mismatch are also taken into account. We show the calculated PL spectra, analyzing the blue and red-shifts in energy as one varies the spike and the well widths, as well as the acceptor doping concentration. We found a transition between a regime of isolated quantum wells and that of interacting DQWs. Since there are few studies of optical properties of quantum wells based on nitride quaternary alloys, the results reported here will provide guidelines for the interpretation of forthcoming experiments.
Editor: Amsterdam: Elsevier B.V
Idioma: Inglês

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Luminescence studies on nitride quaternary alloys double quantum wells

Rodrigues, S.C.P. ; dos Santos, O.F.P. ; Scolfaro, L.M.R. ; Sipahi, G.M. ; da Silva, E.F.

Amsterdam: Elsevier B.V

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