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.
STATEMENT OF GOVERNMENT INTEREST
 This invention was made with government support under SC0001059 awarded by the Department of Energy, FA9550-08-1-0331 awarded by the Air Force Office of Scientific Research, and DMR1121262 awarded by the National Science Foundation. The government has certain rights in the invention.