Author/Authors :
Wegmann، نويسنده , , G. and Mahrt، نويسنده , , R.F. and Bنssler، نويسنده , , H. and Giessen، نويسنده , , H. and Murgia، نويسنده , , M. and Kapousta، نويسنده , , O. and Muccini، نويسنده , , M. and Taliani، نويسنده , , C. and Zamboni، نويسنده , , R.، نويسنده ,
Abstract :
The electroactive and photoactive properties of conjugated systems have attracted the interest of many laboratories, both for a basic understanding of their photophysics as well as for possible applications in organic-based optoelectronic devices, α-sexithienyl has been recognized as a model compound for a basic understanding of the electronic properties of conjugated materials. We report on ultrafast pump-probe measurements on ultra-high vacuum deposited thin films of α-sexithienyl, Femtosecond transient spectroscopy experiments were performed at low temperatures and over a wide wavelength range of the probe beam (from 420 nm up to 680 nm). The dynamics of the photoexcited species are discussed in the frame of the excitonic model.
Keywords :
Thin films , ultrafast spectroscopy , conjugated systems , Oligothiophenes
