4.6 Article

Photoluminescence enhancement by gold nanoparticles in Eu3+ doped GeO2-Bi2O3 glasses

Journal

APPLIED PHYSICS LETTERS
Volume 94, Issue 10, Pages -

Publisher

AMER INST PHYSICS
DOI: 10.1063/1.3097241

Keywords

bismuth compounds; europium compounds; germanate glasses; gold compounds; nanoparticles; photoluminescence; spectral line intensity

Funding

  1. Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
  2. Fundacao de Amparo a Ciencia e Tecnologia do Estado de Pernambuco (FACEPE)

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We report large photoluminescence (PL) enhancement in Eu3+-doped GeO2-Bi2O3 glasses containing gold nanoparticles (NPs). Growth of approximate to 1000% in the PL intensity corresponding to the Eu3+ transition D-5(0)-> F-7(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 Eu3+ locations due to the presence of the NPs and the energy transfer from the excited NPs to the Eu3+ ions.

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