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 organic photovoltaic device comprising an anode, a cathode, and in between the anode and the cathode a photoactive layer, the photoactive layer comprising an electron-donor compound and an electron-acceptor compound, wherein the electron-donor compound is a polymer comprising an electron-acceptor unit (A) and an electron-donor unit (D), wherein the electron-acceptor unit (A) has the formula: wherein: π is a π-conjugated moiety comprising at least one aryl or heteroaryl group; R1 is selected from the group consisting of a C1-40 alkyl group, a C2-40 alkenyl group, and a C1-40 haloalkyl group; and the electron-donor unit (D) comprises a terthiophene.