We study using first-principle calculations the electronic and optical properties of In0.5Ga0.5As/InP and In0.5Al0.5As/InP superlattices, where the InGaAs and InAlAs alloys are described through an appropriate ordered ternary structure. The calculated electronic properties show that the substitution of Ga with Al originate an opening of the band gap from the infrared to the near visible and a transformation of the band alignment from type I to type II. Through the analysis of the optical properties we discuss successfully the giant polarization anisotropy observed in these systems. (C) 2001 Elsevier Science B.V. All rights reserved.

The electronic and optical properties of InGaAs/InP and InAlAs/InP superlattices / C., Ghidoni; Magri, Rita; Ossicini, Stefano. - In: SURFACE SCIENCE. - ISSN 0039-6028. - STAMPA. - 489:1-3(2001), pp. 59-71. [10.1016/S0039-6028(01)01128-1]

The electronic and optical properties of InGaAs/InP and InAlAs/InP superlattices

MAGRI, Rita;OSSICINI, Stefano
2001

Abstract

We study using first-principle calculations the electronic and optical properties of In0.5Ga0.5As/InP and In0.5Al0.5As/InP superlattices, where the InGaAs and InAlAs alloys are described through an appropriate ordered ternary structure. The calculated electronic properties show that the substitution of Ga with Al originate an opening of the band gap from the infrared to the near visible and a transformation of the band alignment from type I to type II. Through the analysis of the optical properties we discuss successfully the giant polarization anisotropy observed in these systems. (C) 2001 Elsevier Science B.V. All rights reserved.
2001
Inglese
SURFACE SCIENCE
489
1-3
59
71
WOS:000170761800008
2-s2.0-0035921005
VAPOR-PHASE EPITAXY; VALENCE-BAND DISCONTINUITY; MAGNETIC-FIELD; QUANTUM-WELLS; COMMON-ATOM; II-VI; HETEROSTRUCTURES; ANISOTROPY; OFFSETS; SEMICONDUCTORS
Lavoro eseguito nell'ambito del progetto europeoINTAS - 2000-2002. Titolo: "Polarization Resolved Spectroscopy of nanostrucutres”, Altri Partecipanti : CNRS Paris, Univ. Wuerzburg, Ioffe Institut St. Petersburg, Institut de Solid State Physics Chernogolovka, Institut de Physique Kiev. Finanziamento Euro 21000.
none
info:eu-repo/semantics/article
Contributo su RIVISTA::Articolo su rivista
262
The electronic and optical properties of InGaAs/InP and InAlAs/InP superlattices / C., Ghidoni; Magri, Rita; Ossicini, Stefano. - In: SURFACE SCIENCE. - ISSN 0039-6028. - STAMPA. - 489:1-3(2001), pp. 59-71. [10.1016/S0039-6028(01)01128-1]
C., Ghidoni; Magri, Rita; Ossicini, Stefano
3
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/305125
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