Author/Authors :
Botta، نويسنده , , C. and Luzzati، نويسنده , , S. and Bolognesi، نويسنده , , A. and Elisei، نويسنده , , F. and Aloisi، نويسنده , , G.G.، نويسنده ,
Abstract :
We present a study of the photoexcitations of poly-3-alkylthiophene solutions. Phototransients with lifetimes of l μ - 10 ms are observed by measuring the steady state and transient photoinduced absorption on a good solvent solution. The long lived photoexcited states are assigned to charged species which are generated and recombine through a weak reversible polymer-solvent charge-transfer. A short lived photoinduced band at 1.65 eV is assigned to a dipole allowed triplet-triplet transition.
