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Article: Modeling the optical constants of ternary alloys using modified oscillator model: Application to AlxGa1-xN

TitleModeling the optical constants of ternary alloys using modified oscillator model: Application to AlxGa1-xN
Authors
Issue Date2001
PublisherWiley - V C H Verlag GmbH & Co. KGaA. The Journal's web site is located at http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1862-6319
Citation
Physica Status Solidi (A) Applied Research, 2001, v. 184 n. 2, p. 465-476 How to Cite?
AbstractThe optical constants of hexagonal AlxGa1-xN alloys for the perpendicular polarization (E ⊥ c) have been modeled in the energy range up to 10 eV for compositions 0 ≤ x ≤ 1. The model employed for describing the dielectric function is the modified oscillator model. The main difference between the employed model and the conventional oscillator model is the use of an adjustable broadening function instead of the Lorentzian one. One additional adjustable parameter per oscillator determines the type of broadening. The adjustable broadening enables us to model transitions with inhomogeneous broadening (i.e. broadening which is not purely Lorentzian) with a single oscillator, while in the conventional oscillator model superposition of several oscillators would be required. We employ a total of five oscillators, giving 21 parameters for each composition, i.e. 84 parameters for the entire composition range 0 ≤ x ≤ 1. This is significantly less than the number of parameters used in modeling the optical constants of AlxGa1-xAs using harmonic oscillators, where 144 parameters were employed (F. L. Terry, Jr., J. Appl. Phys. 70, 409 (1991)).
Persistent Identifierhttp://hdl.handle.net/10722/174942
ISSN
2007 Impact Factor: 1.214
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorDjurišić, ABen_US
dc.contributor.authorLi, EHen_US
dc.date.accessioned2012-11-26T08:48:17Z-
dc.date.available2012-11-26T08:48:17Z-
dc.date.issued2001en_US
dc.identifier.citationPhysica Status Solidi (A) Applied Research, 2001, v. 184 n. 2, p. 465-476en_US
dc.identifier.issn0031-8965en_US
dc.identifier.urihttp://hdl.handle.net/10722/174942-
dc.description.abstractThe optical constants of hexagonal AlxGa1-xN alloys for the perpendicular polarization (E ⊥ c) have been modeled in the energy range up to 10 eV for compositions 0 ≤ x ≤ 1. The model employed for describing the dielectric function is the modified oscillator model. The main difference between the employed model and the conventional oscillator model is the use of an adjustable broadening function instead of the Lorentzian one. One additional adjustable parameter per oscillator determines the type of broadening. The adjustable broadening enables us to model transitions with inhomogeneous broadening (i.e. broadening which is not purely Lorentzian) with a single oscillator, while in the conventional oscillator model superposition of several oscillators would be required. We employ a total of five oscillators, giving 21 parameters for each composition, i.e. 84 parameters for the entire composition range 0 ≤ x ≤ 1. This is significantly less than the number of parameters used in modeling the optical constants of AlxGa1-xAs using harmonic oscillators, where 144 parameters were employed (F. L. Terry, Jr., J. Appl. Phys. 70, 409 (1991)).en_US
dc.languageengen_US
dc.publisherWiley - V C H Verlag GmbH & Co. KGaA. The Journal's web site is located at http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1862-6319-
dc.relation.ispartofPhysica Status Solidi (A) Applied Researchen_US
dc.titleModeling the optical constants of ternary alloys using modified oscillator model: Application to AlxGa1-xNen_US
dc.typeArticleen_US
dc.identifier.emailDjurišić, AB: dalek@hku.hken_US
dc.identifier.authorityDjurišić, AB=rp00690en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1002/1521-396X(200104)184:2<465::AID-PSSA465>3.0.CO;2-C-
dc.identifier.scopuseid_2-s2.0-19044362766en_US
dc.identifier.hkuros63741-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-19044362766&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume184en_US
dc.identifier.issue2en_US
dc.identifier.spage465en_US
dc.identifier.epage476en_US
dc.identifier.isiWOS:000168559200025-
dc.identifier.scopusauthoridDjurišić, AB=7004904830en_US
dc.identifier.scopusauthoridLi, EH=7201410087en_US

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