Dithienothiophene based polymers for photovoltaics: synthesis and characterization

The processability and the solubility of organic materials are important in the fabricatiopn of photoelectric cinversion devices. Polydithienothiophene (PDTT)that exhibit low energy gap are promising materials pfo this application. The synthesis and the electrochemical characterization of soluble PDTT copolymers is presented By comparing electrochemical and optical data we provide information on the ionization potential and electrocic affinity of these materials.