| abstract |
The present invention relates to a novel compound containing dithieno[2,3-d:2',3'-d']-symmetric-benzobisindeno[1,2-b:5,6-b']dithiophene unit Organic semiconducting oligomers and polymers, processes for their preparation and precipitates or intermediates used therein, polymers, blends, mixtures and compositions containing them, said oligomers, polymers, blends , mixtures and compositions as semiconductors in organic electronic (OE) devices, especially in organic photovoltaic (OPV) devices, and to OEs comprising these oligomers, polymers, blends, mixtures or compositions and OPV devices. |