申请人:Hayoz Pascal
公开号:US08796469B2
公开(公告)日:2014-08-05
The present invention relates to polymers comprising one or more (repeating) unit(s) of the formula (I) which are characterized in that Ar1 and Ar1′ are independently of each other are an annulated (aromatic) heterocyclic ring system, containing at least one thiophene ring, which may be optionally substituted by one, or more groups, and their use as organic semiconductor in organic devices, especially in organic photovoltaics (solar cells) and photodiodes, or in a device containing a diode and/or an organic field effect transistor. The polymers according to the invention have excellent solubility in organic solvents and excellent film-forming properties. In addition, high efficiency of energy conversion, excellent field-effect mobility, good on/off current ratios and/or excellent stability can be observed, when the polymers according to the invention are used in organic field effect transistors, organic photovoltaics (solar cells) and photodiodes.
本发明涉及聚合物,其包含一个或多个(重复)式(I)单元,其特征在于Ar1和Ar1'独立地是一个含有至少一个噻吩环的环状(芳香)杂环环系,可以选择地被一个或多个基团取代,并且它们用作有机半导体在有机器件中,特别是在有机光伏(太阳能电池)和光电二极管中,或在包含二极管和/或有机场效应晶体管的器件中。根据本发明的聚合物在有机溶剂中具有优异的溶解性和优异的成膜性能。此外,当根据本发明的聚合物用于有机场效应晶体管、有机光伏(太阳能电池)和光电二极管时,可以观察到高效能转换率,优异的场效应迁移率,良好的开关电流比和/或优异的稳定性。