Basf Se Corporation

Rene Albert Johan Janssen

Mathieu G R Turbiez

Mathias Dueggeli

Hans Juerg Kirner

Martinus Maria Wienk

A polymer includes repeating unit(s) of the formula (I). a, b, c, d, e and f are 0, 1, 2, or 3. Arand Arare independently of each other a group of formula (AR1). Ar, Ar, Ar, Ar, Arand Arare independently of each other a group of formula (AR2). The polymer is preferably a co-polymer. 

Diketopyrrolopyrrole polymers as organic semiconductors

The present invention relates to polymers comprising a repeating unit of the formula (I) and their use as organic semiconductor in organic devices, especially a diode, an organic field effect transistor and/or a solar cell, or a device containing a diode and/or an organic field effect transistor, and/or a solar cell. 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 semiconductor devices or organic photovoltaic (PV) devices (solar cells). 

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NS Heeze, Netherlands

Rene Albert Johan Janssen