Author/Authors :
Berggren، نويسنده , , Magnus and Bergman، نويسنده , , Peder and Fagerstrِm، نويسنده , , Jan and Inganنs، نويسنده , , Olle and Andersson، نويسنده , , Mats and Weman، نويسنده , , Helge and Granstrِm، نويسنده , , Magnus and Stafstrِm، نويسنده , , Sven and Wennerstrِm، نويسنده , , Olof and Hjertberg، نويسنده , , Thomas، نويسنده ,
Abstract :
The decay of photoexcitations in polythiophene chains has been studied in solid solutions of the polymer from room temperature to 4 K. A strong blue shift of the emission spectrum is observed in the polymer blend, as compared to the homopolymer. Dispersion of the polythiophene suppresses the non-radiative processes, which are suggested to be correlated to close contacts of polymer chains. Quantum chemistry modeling of the excited state distributed on two chains corroborate this conclusion.
