Photoluminescence enhancement by gold nanoparticles in Eu(3+) doped GeO(2)-Bi(2)O(3) glasses
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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Data(s) |
17/04/2012
17/04/2012
2009
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Resumo |
We report large photoluminescence (PL) enhancement in Eu(3+)-doped GeO(2)-Bi(2)O(3) glasses containing gold nanoparticles (NPs). Growth of approximate to 1000% in the PL intensity corresponding to the Eu(3+) transition (5)D(0)->(7)F(2), at 614 nm, was observed in comparison with a reference sample that does not contain gold NPs. Other PL bands from 580 to 700 nm are also enhanced. The enhancement of the PL intensity is attributed to the increased local field in the Eu(3+) locations due to the presence of the NPs and the energy transfer from the excited NPs to the Eu(3+) ions. Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) Fundacao de Amparo a Ciencia e Tecnologia do Estado de Pernambuco (FACEPE) |
Identificador |
APPLIED PHYSICS LETTERS, v.94, n.10, 2009 0003-6951 http://producao.usp.br/handle/BDPI/14728 10.1063/1.3097241 |
Idioma(s) |
eng |
Publicador |
AMER INST PHYSICS |
Relação |
Applied Physics Letters |
Direitos |
openAccess Copyright AMER INST PHYSICS |
Palavras-Chave | #bismuth compounds #europium compounds #germanate glasses #gold compounds #nanoparticles #photoluminescence #spectral line intensity #SILVER #Physics, Applied |
Tipo |
article original article publishedVersion |