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Excitation energy transfer in porous silicon/laser dye composites
Author(s) -
Pranculis Vytenis,
Šimkienė Irena,
Treideris Marius,
Gulbinas Vidmantas
Publication year - 2013
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201329299
Subject(s) - rhodamine 6g , porous silicon , fluorescence , materials science , förster resonance energy transfer , excited state , silicon , resonant inductive coupling , dye laser , luminescence , rhodamine , photochemistry , excitation , laser , composite number , silicon oxide , energy transfer , composite material , molecular physics , chemistry , atomic physics , optoelectronics , optics , physics , electrical engineering , engineering , silicon nitride
Excited state relaxation and energy transfer in porous silicon (PS)/laser dye [oxazine 1 (Ox1), rhodamine 6G (Rh6G)] composites have been studied by means of steady‐state and time‐resolved fluorescence. Fluorescence decay kinetics reveals the nonradiative energy transfer from PS to the dye. Increased decay rate of the dye luminescence in the composite indicates that opposite energy transfer is also likely. Analysis of the time‐resolved fluorescence of the PS/R6G composite also shows that there is no energy transfer from silicon oxide responsible for the “blue” fluorescence band to silicon nanocrystalites, and that interaction between Si nanocrystals responsible for the “red” PS fluorescence is absent or weak.