Author/Authors :
Saidani، نويسنده , , M.A. and Benfredj، نويسنده , , A. and Hamed، نويسنده , , Z. Ben and Romdhane، نويسنده , , S. and Ulbricht، نويسنده , , C. and Egbe، نويسنده , , D.A.M. and Bouchriha، نويسنده , , H.، نويسنده ,
Abstract :
The vibronic structures of the photoluminescence spectra of a triple-bond-containing polymer (AnE-PVstat) as a solution and as a thin film were investigated by means of Franck-Condon analysis. We have inferred the energetic disorder which led in turn to an estimation of the diffusion length of excitations. A good diffusion length of excitations (LD) as large as (21 nm) has been estimated in both film and solution. Exciton migration was found to be morphology-independent thanks to the cylindrical symmetry of the triple bond which acts as a bridge between aromatic groups in case of poor π-overlapping.
