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dc.contributor.authorMiah, M Idrish
dc.date.accessioned2017-05-03T17:00:21Z
dc.date.available2017-05-03T17:00:21Z
dc.date.issued2009
dc.date.modified2010-06-24T05:20:19Z
dc.identifier.issn0254-0584
dc.identifier.doi10.1016/j.matchemphys.2009.04.008
dc.identifier.urihttp://hdl.handle.net/10072/29381
dc.description.abstractCrystals of layered semiconductor are grown by Bridgman technique and are studied them under twophoton excitation by a Q-switched 20-ns pulse laser. The photoluminescence (PL) emission spectra of the crystals are measured at various pumping powers and temperatures. The PL spectra appear broad and structureless emissions with their peaks in the green spectral region. The characteristic emissions are fromself-trapped excitons of the crystals. An analysis of the spectra measured at various pumping powers shows a quadratic dependence of the PL peak intensity on the power, confirming a biphotonic process of the two-photonpumping. The temperature dependence shows an enhancement of the nonlinear response at low temperatures. The activation energy is estimated and found to be 2.4 meV. The roles of the bound excitons in the observed PL are discussed briefly.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.languageEnglish
dc.language.isoeng
dc.publisherElsevier
dc.publisher.placeSwitzerland
dc.relation.ispartofstudentpublicationN
dc.relation.ispartofpagefrom327
dc.relation.ispartofpageto329
dc.relation.ispartofissue2-3
dc.relation.ispartofjournalMaterials Chemistry and Physics
dc.relation.ispartofvolume116
dc.rights.retentionY
dc.subject.fieldofresearchAtomic, Molecular, Nuclear, Particle and Plasma Physics not elsewhere classified
dc.subject.fieldofresearchMacromolecular and Materials Chemistry
dc.subject.fieldofresearchMaterials Engineering
dc.subject.fieldofresearchNanotechnology
dc.subject.fieldofresearchcode020299
dc.subject.fieldofresearchcode0303
dc.subject.fieldofresearchcode0912
dc.subject.fieldofresearchcode1007
dc.titleSelf-trapped excitonic green emission from layered semiconductors
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.facultyGriffith Sciences, School of Natural Sciences
gro.date.issued2009
gro.hasfulltextNo Full Text
gro.griffith.authorMiah, Mohammad I.


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