| abstract |
The present invention relates to a polymer comprising one or more (repeating) unit(s) of formula I, wherein Y is a group of formula II; And in organic devices, in particular in organic photovoltaic and photodiodes, or in devices containing diodes and/or organic field effect transistors, IR absorbers, their use as organic semiconductors. The polymers according to the invention can have excellent solubility in organic solvent 10 and excellent film-forming properties. In addition, when the polymer according to the invention is used in organic field effect transistors, organic photovoltaic and photodiodes, high efficiency energy conversion, excellent field-effect mobility, excellent on/off current ratio and/or excellent stability are observed. Can be. <Formula I> <Formula II> |