This course teaches the fundamental optical properties of conjugated polymer structures and their applications to optoelectronic device operation. This course provides a wide background and helps students meet the demand of the growing organic optoelectronic industry by preparing them for advanced study and research in organic optoelectronic devices. Topics include basic concepts in basic optical properties of conjugated polymers, OLEDs, solar cells, electrochromism, principles of optoelectronic device operation.