Silver nanoparticle size-dependent measurement of quantum efficiency of Rhodamine 6G

N. Shemeena Basheer, B. Rajesh Kumar, Achamma Kurian, Sajan D. George

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The plasmonic absorption band of silver nanoparticles in the visible range of electromagnetic spectrum has been successfully exploited to alter the emission characteristics of the Rhodamine 6G dye molecule. The influence of the nanoparticle size on the fluorescence quantum yield of Rhodamine 6G is interrogated via steady state fluorescence as well as dual beam thermal lens technique. The potential of the thermal lens technique that probe nonradiative path in contrast to radiative path exhibited in the fluorescence spectra as a complementary method to measure the quantum yield of a dye molecule is exploited. Analysis of the results clearly indicates that the particle size and the spectral overlap between the emission spectra of Rhodamine 6G, and absorption spectra of the silver nanoparticles determine the quantum yield value of dye-nanoparticle mixture.

Original languageEnglish
Pages (from-to)581-587
Number of pages7
JournalApplied Physics B: Lasers and Optics
Volume113
Issue number4
DOIs
Publication statusPublished - 01-12-2013

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

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