Optoelectronic devices, such as photovoltaic devices, comprising a low band gap, solution processable diketopyrrolopyrrole or dithioketopyrrolopyrrole chromophore core or cores are disclosed. Also disclosed are methods of fabricating such optoelectronic devices.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
 This invention was made with Government support under grants N000140510677 and N000140811226 awarded by the Office of Naval Research, and grant DE-FG02-06ER46324 awarded by the Department of Energy. The Government has certain rights in this invention.