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Article: Dielectric function models for describing the optical properties of hexagonal GaN

TitleDielectric function models for describing the optical properties of hexagonal GaN
Authors
KeywordsPhysics engineering
Issue Date2001
PublisherAmerican Institute of Physics. The Journal's web site is located at http://jap.aip.org/jap/staff.jsp
Citation
Journal Of Applied Physics, 2001, v. 89 n. 1, p. 273-282 How to Cite?
AbstractSeveral different models have been employed for modeling the dielectric function of hexagonal GaN in the range from 1 to 10 eV. Models are compared in terms of number of parameters required, intricacy of model equations, and possibility of accurate estimation of important physical parameters, such as energies of critical points and exciton binding energies. Shortcomings and advantages of each model are discussed in detail. Excellent agreement with the experimental data for GaN has been achieved with three of the investigated models. It has also been shown that an assumption of adjustable broadening instead of a purely Lorentzian one improves the agreement with the experimental data and enables elimination of excessive absorption below the gap which is inherent to the models with Lorentzian broadening. © 2001 American Institute of Physics.
Persistent Identifierhttp://hdl.handle.net/10722/42391
ISSN
2015 Impact Factor: 2.101
2015 SCImago Journal Rankings: 0.603
References

 

DC FieldValueLanguage
dc.contributor.authorDjurišić, ABen_HK
dc.contributor.authorLi, EHen_HK
dc.date.accessioned2007-01-29T08:48:41Z-
dc.date.available2007-01-29T08:48:41Z-
dc.date.issued2001en_HK
dc.identifier.citationJournal Of Applied Physics, 2001, v. 89 n. 1, p. 273-282en_HK
dc.identifier.issn0021-8979en_HK
dc.identifier.urihttp://hdl.handle.net/10722/42391-
dc.description.abstractSeveral different models have been employed for modeling the dielectric function of hexagonal GaN in the range from 1 to 10 eV. Models are compared in terms of number of parameters required, intricacy of model equations, and possibility of accurate estimation of important physical parameters, such as energies of critical points and exciton binding energies. Shortcomings and advantages of each model are discussed in detail. Excellent agreement with the experimental data for GaN has been achieved with three of the investigated models. It has also been shown that an assumption of adjustable broadening instead of a purely Lorentzian one improves the agreement with the experimental data and enables elimination of excessive absorption below the gap which is inherent to the models with Lorentzian broadening. © 2001 American Institute of Physics.en_HK
dc.format.extent152683 bytes-
dc.format.extent28672 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/msword-
dc.languageengen_HK
dc.publisherAmerican Institute of Physics. The Journal's web site is located at http://jap.aip.org/jap/staff.jspen_HK
dc.relation.ispartofJournal of Applied Physicsen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectPhysics engineeringen_HK
dc.titleDielectric function models for describing the optical properties of hexagonal GaNen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0021-8979&volume=89&issue=1&spage=273&epage=282&date=2001&atitle=Dielectric+function+models+for+describing+the+optical+properties+of+hexagonal+GaNen_HK
dc.identifier.emailDjurišić, AB: dalek@hku.hken_HK
dc.identifier.authorityDjurišić, AB=rp00690en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1063/1.1331069en_HK
dc.identifier.scopuseid_2-s2.0-0002622425en_HK
dc.identifier.hkuros63764-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0002622425&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume89en_HK
dc.identifier.issue1en_HK
dc.identifier.spage273en_HK
dc.identifier.epage282en_HK
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridDjurišić, AB=7004904830en_HK
dc.identifier.scopusauthoridLi, EH=7201410087en_HK

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