Tuning luminescence of 3d transition- metal doped quantum particles: Ni+2: CdS and Fe+3: CdS

Detalhes bibliográficos
Autor(a) principal: Taheri,S. M.
Data de Publicação: 2010
Outros Autores: Yousefi,M. H., Khosravi,A. A.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Journal of Physics
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332010000300007
Resumo: The room- temperature photoluminescence of Cd1- xMxS (M=Ni, Fe) nanoparticles were investigated. Compared with the photoluminescence of CdS which peaks at 475 nm, the photoemission of CdS:Fe nanoparticles was peaking at 537 nm because of Fe acting as luminescent centers. On the other hand, the green emission (503 nm) of CdS:Ni attributed to the ¹T2g(D)→ ³A2g(F) raditive transition. With the increase of the Ni+2 concentration, photoluminescence intensity is increased while by Fe replacement with Cd ions, PL intensity is decreased. Relative to bulk crystals, due to the quantum confinement effect the band gap of CdS clusters is significantly blue- shifted with decreasing cluster size. CdS nanoclusters present a mixed hexagonal/cubic structure and with increasing doping concentration the peaks position of doped CdS shifts to higher angle.
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spelling Tuning luminescence of 3d transition- metal doped quantum particles: Ni+2: CdS and Fe+3: CdSNanoparticlesOptical propertiesPhotoluminescenceThe room- temperature photoluminescence of Cd1- xMxS (M=Ni, Fe) nanoparticles were investigated. Compared with the photoluminescence of CdS which peaks at 475 nm, the photoemission of CdS:Fe nanoparticles was peaking at 537 nm because of Fe acting as luminescent centers. On the other hand, the green emission (503 nm) of CdS:Ni attributed to the ¹T2g(D)→ ³A2g(F) raditive transition. With the increase of the Ni+2 concentration, photoluminescence intensity is increased while by Fe replacement with Cd ions, PL intensity is decreased. Relative to bulk crystals, due to the quantum confinement effect the band gap of CdS clusters is significantly blue- shifted with decreasing cluster size. CdS nanoclusters present a mixed hexagonal/cubic structure and with increasing doping concentration the peaks position of doped CdS shifts to higher angle.Sociedade Brasileira de Física2010-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332010000300007Brazilian Journal of Physics v.40 n.3 2010reponame:Brazilian Journal of Physicsinstname:Sociedade Brasileira de Física (SBF)instacron:SBF10.1590/S0103-97332010000300007info:eu-repo/semantics/openAccessTaheri,S. M.Yousefi,M. H.Khosravi,A. A.eng2010-09-27T00:00:00Zoai:scielo:S0103-97332010000300007Revistahttp://www.sbfisica.org.br/v1/home/index.php/pt/ONGhttps://old.scielo.br/oai/scielo-oai.phpsbfisica@sbfisica.org.br||sbfisica@sbfisica.org.br1678-44480103-9733opendoar:2010-09-27T00:00Brazilian Journal of Physics - Sociedade Brasileira de Física (SBF)false
dc.title.none.fl_str_mv Tuning luminescence of 3d transition- metal doped quantum particles: Ni+2: CdS and Fe+3: CdS
title Tuning luminescence of 3d transition- metal doped quantum particles: Ni+2: CdS and Fe+3: CdS
spellingShingle Tuning luminescence of 3d transition- metal doped quantum particles: Ni+2: CdS and Fe+3: CdS
Taheri,S. M.
Nanoparticles
Optical properties
Photoluminescence
title_short Tuning luminescence of 3d transition- metal doped quantum particles: Ni+2: CdS and Fe+3: CdS
title_full Tuning luminescence of 3d transition- metal doped quantum particles: Ni+2: CdS and Fe+3: CdS
title_fullStr Tuning luminescence of 3d transition- metal doped quantum particles: Ni+2: CdS and Fe+3: CdS
title_full_unstemmed Tuning luminescence of 3d transition- metal doped quantum particles: Ni+2: CdS and Fe+3: CdS
title_sort Tuning luminescence of 3d transition- metal doped quantum particles: Ni+2: CdS and Fe+3: CdS
author Taheri,S. M.
author_facet Taheri,S. M.
Yousefi,M. H.
Khosravi,A. A.
author_role author
author2 Yousefi,M. H.
Khosravi,A. A.
author2_role author
author
dc.contributor.author.fl_str_mv Taheri,S. M.
Yousefi,M. H.
Khosravi,A. A.
dc.subject.por.fl_str_mv Nanoparticles
Optical properties
Photoluminescence
topic Nanoparticles
Optical properties
Photoluminescence
description The room- temperature photoluminescence of Cd1- xMxS (M=Ni, Fe) nanoparticles were investigated. Compared with the photoluminescence of CdS which peaks at 475 nm, the photoemission of CdS:Fe nanoparticles was peaking at 537 nm because of Fe acting as luminescent centers. On the other hand, the green emission (503 nm) of CdS:Ni attributed to the ¹T2g(D)→ ³A2g(F) raditive transition. With the increase of the Ni+2 concentration, photoluminescence intensity is increased while by Fe replacement with Cd ions, PL intensity is decreased. Relative to bulk crystals, due to the quantum confinement effect the band gap of CdS clusters is significantly blue- shifted with decreasing cluster size. CdS nanoclusters present a mixed hexagonal/cubic structure and with increasing doping concentration the peaks position of doped CdS shifts to higher angle.
publishDate 2010
dc.date.none.fl_str_mv 2010-09-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332010000300007
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332010000300007
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-97332010000300007
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Física
publisher.none.fl_str_mv Sociedade Brasileira de Física
dc.source.none.fl_str_mv Brazilian Journal of Physics v.40 n.3 2010
reponame:Brazilian Journal of Physics
instname:Sociedade Brasileira de Física (SBF)
instacron:SBF
instname_str Sociedade Brasileira de Física (SBF)
instacron_str SBF
institution SBF
reponame_str Brazilian Journal of Physics
collection Brazilian Journal of Physics
repository.name.fl_str_mv Brazilian Journal of Physics - Sociedade Brasileira de Física (SBF)
repository.mail.fl_str_mv sbfisica@sbfisica.org.br||sbfisica@sbfisica.org.br
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