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Article: Luminescence studies of CdS spherical particles via hydrothermal synthesis

TitleLuminescence studies of CdS spherical particles via hydrothermal synthesis
Authors
Issue Date2000
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/jpcs
Citation
Journal Of Physics And Chemistry Of Solids, 2000, v. 61 n. 6, p. 829-836 How to Cite?
AbstractThe spherical particles of CdS consisting of nanoparticles (approx. 100 nm) were synthesized by a hydrothermal process. The particle formation and growth depend on the rate of sulfide-ion generation and diffusion-controlled aggregation of nanoparticles. As demonstrated in the profiles of powder X-ray diffraction, the crystalline phases are governed by the reaction temperature. Photoluminescence studies on CdS particles show two emission bands at the room temperature. The red emission at 680 nm is due to sulfur vacancies, and a new infrared red (IR) emission at 760 nm is attributed to self-activated centers. A red shift of IR band with the decrease of temperature was explained with a configurational coordinate model. The different saturation limits for the red and IR bands are discussed in terms of the formation of donor-acceptor pairs and exciton in CdS particles.
Persistent Identifierhttp://hdl.handle.net/10722/174788
ISSN
2015 Impact Factor: 2.048
2015 SCImago Journal Rankings: 0.639
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorXu, GQen_US
dc.contributor.authorLiu, Ben_US
dc.contributor.authorXu, SJen_US
dc.contributor.authorChew, CHen_US
dc.contributor.authorChua, SJen_US
dc.contributor.authorGana, LMen_US
dc.date.accessioned2012-11-26T08:47:26Z-
dc.date.available2012-11-26T08:47:26Z-
dc.date.issued2000en_US
dc.identifier.citationJournal Of Physics And Chemistry Of Solids, 2000, v. 61 n. 6, p. 829-836en_US
dc.identifier.issn0022-3697en_US
dc.identifier.urihttp://hdl.handle.net/10722/174788-
dc.description.abstractThe spherical particles of CdS consisting of nanoparticles (approx. 100 nm) were synthesized by a hydrothermal process. The particle formation and growth depend on the rate of sulfide-ion generation and diffusion-controlled aggregation of nanoparticles. As demonstrated in the profiles of powder X-ray diffraction, the crystalline phases are governed by the reaction temperature. Photoluminescence studies on CdS particles show two emission bands at the room temperature. The red emission at 680 nm is due to sulfur vacancies, and a new infrared red (IR) emission at 760 nm is attributed to self-activated centers. A red shift of IR band with the decrease of temperature was explained with a configurational coordinate model. The different saturation limits for the red and IR bands are discussed in terms of the formation of donor-acceptor pairs and exciton in CdS particles.en_US
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/jpcsen_US
dc.relation.ispartofJournal of Physics and Chemistry of Solidsen_US
dc.titleLuminescence studies of CdS spherical particles via hydrothermal synthesisen_US
dc.typeArticleen_US
dc.identifier.emailXu, SJ: sjxu@hku.hken_US
dc.identifier.authorityXu, SJ=rp00821en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/S0022-3697(99)00403-5en_US
dc.identifier.scopuseid_2-s2.0-0033871405en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0033871405&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume61en_US
dc.identifier.issue6en_US
dc.identifier.spage829en_US
dc.identifier.epage836en_US
dc.identifier.isiWOS:000086823700001-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridXu, GQ=7404264372en_US
dc.identifier.scopusauthoridLiu, B=36063446100en_US
dc.identifier.scopusauthoridXu, SJ=7404439005en_US
dc.identifier.scopusauthoridChew, CH=7102800360en_US
dc.identifier.scopusauthoridChua, SJ=35516064500en_US
dc.identifier.scopusauthoridGana, LM=6507109563en_US

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