Author/Authors :
P.A. Lane، نويسنده , , X. Wei، نويسنده , , Z.V Vardeny، نويسنده , , J. Poplawski، نويسنده , , E. Ehrenfreund، نويسنده , , M. Ibrahim، نويسنده , , A.J. Frank، نويسنده ,
Abstract :
We have studied the absorption spectra of charged excitations in sexithiophene thin films induced by doping and photogeneration. Absorption bands at 0.80 and 1.54 eV are attributed to spin-12 polarons, whereas a single absorption band at 1.1 eV is due to spinless bipolarons. Charge conjugation symmetry breaking is evident for both polarons and bipolarons.
