Conjugated polymers and their use in optoelectronic devices

摘要

Disclosed are certain polymeric compounds and their use as organic semiconductors in organic and hybrid optical, optoelectronic, and/or electronic devices such as photovoltaic cells, light emitting diodes, light emitting transistors, and field effect transistors. The disclosed compounds can provide improved device performance, for example, as measured by power conversion efficiency, fill factor, open circuit voltage, field-effect mobility, on/off current ratios, and/or air stability when used in photovoltaic cells or transistors. The disclosed compounds can have good solubility in common solvents enabling device fabrication via solution processes.

主权项

1. An electronic, optical or optoelectronic device comprising:
a first electrode, a second electrode, and a semiconductor component disposed between the first electrode and the second electrode, the semiconductor component comprising a random copolymer having the formula:whereinM is an optionally substituted 2,1,3-benzothiadiazole-4,7-diyl group;each of R1 and R2 is a branched C6-20 alkyl group, a branched C6-20 alkoxy group, or an organic group comprising a cyclic moiety;R7 is a linear C6-20 alkyl group; andx and y are real numbers representing mole fractions, wherein 0.1≦x≦0.9, 0.1≦y≦0.9, and the sum of x and y is about 1.