Author/Authors :
Dicker، نويسنده , , G. and Hohenau، نويسنده , , A. and Graupner، نويسنده , , W. and Tasch، نويسنده , , S. and Graupner، نويسنده , , M. and Hermetter، نويسنده , , A. and Schlicke، نويسنده , , B. and Schulte، نويسنده , , Alexander N. and Schlüter، نويسنده , , A.D. and Scherf، نويسنده , , U. and Müllen، نويسنده , , K. and Leising، نويسنده , , G.، نويسنده ,
Abstract :
We are investigating the photophysics of a conjugated, red emitting molecule (RS-19) as a guest in a blue emitting laddertype poly(para-phenylene) matrix (mLPPP) by means of steady state and cross-correlation fluorescence spectroscopy. We observe a very efficient excitation energy transfer from mLPPP to RS-19. Through varying the concentration of the red emitter in the host, we demonstrate changes in quantum yields (QY), energy transfer efficiencies (ETE), and decay times of the photo-generated species. The observed internal color conversion can be exploited in white light emitting diodes.
Keywords :
Photo luminescence , Excitation energy transfer , quantum yield , Decay time , Poly(para-phenylene)
