Photoluminescence and Magnetism in Mn2+-Doped ZnO Nanostructures Grown Rapidly by the Microwave Hydrothermal Method

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dc.contributor.author Romeiro, Fernanda C.
dc.contributor.author Marinho, Juliane Z.
dc.contributor.author Silva, Anielle Christine A.
dc.contributor.author Cano, Nilo Francisco [UNIFESP]
dc.contributor.author Dantas, Noelio O.
dc.contributor.author Lima, Renata C.
dc.date.accessioned 2016-01-24T14:34:51Z
dc.date.available 2016-01-24T14:34:51Z
dc.date.issued 2013-12-12
dc.identifier http://dx.doi.org/10.1021/jp408993y
dc.identifier.citation Journal of Physical Chemistry C. Washington: Amer Chemical Soc, v. 117, n. 49, p. 26222-26227, 2013.
dc.identifier.issn 1932-7447
dc.identifier.uri http://repositorio.unifesp.br/handle/11600/37079
dc.description.abstract Zn1-xMnxO nanostructures were synthesized via the microwave-assisted hydrothermal method, which rapidly produces particles of controlled size and morphology. Samples were analyzed considering the effects of manganese ion concentration. XRD revealed that all samples had wurtzite-type structure with Mn2+ ions incorporated in the oxide lattice. UV-vis spectra showed absorption bands from the d-d transitions of Mn2+ ions. As the doping concentration increased, the value of the energy gap decreased, indicating intermediary energy levels within the band gap in the Mn-doped ZnO samples. All samples produced broadband photoluminescence (PL) emissions in the yellow-orange-red range. Additionally, the PL intensity decreased with Mn2+ ion incorporation into the ZnO lattice due to the creation of new recombination centers. Microscopy images showed that manganese in the ZnO matrix produced homogeneously distributed nanostructures. EPR results indicated two locations of Mn2+ ions in the ZnO lattice, lower concentrations in the core of the lattice and higher concentrations at the surface. en
dc.description.sponsorship Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorship Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorship Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)
dc.description.sponsorship Rede Nanobiotec/Brasil
dc.description.sponsorship Rede Mineira de Quimica (RQ:MG)
dc.description.sponsorship Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.format.extent 26222-26227
dc.language.iso eng
dc.publisher Amer Chemical Soc
dc.relation.ispartof Journal of Physical Chemistry C
dc.rights Acesso restrito
dc.title Photoluminescence and Magnetism in Mn2+-Doped ZnO Nanostructures Grown Rapidly by the Microwave Hydrothermal Method en
dc.type Artigo
dc.contributor.institution Universidade Federal de Uberlândia (UFU)
dc.contributor.institution Universidade Federal de São Paulo (UNIFESP)
dc.description.affiliation Univ Fed Uberlandia, Inst Quim, BR-38400902 Uberlandia, MG, Brazil
dc.description.affiliation Univ Fed Uberlandia, Inst Fis, LNMIS, BR-38400902 Uberlandia, MG, Brazil
dc.description.affiliation Universidade Federal de São Paulo, Dept Ciencias Mar, BR-11030400 Santos, Brazil
dc.description.affiliationUnifesp Universidade Federal de São Paulo, Dept Ciencias Mar, BR-11030400 Santos, Brazil
dc.description.sponsorshipID CNPq: 477150/2008-0
dc.description.sponsorshipID FAPEMIG: APQ-01842-09
dc.identifier.doi 10.1021/jp408993y
dc.description.source Web of Science
dc.identifier.wos WOS:000328529800040



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