Researchers at the University of California, Santa Barbara and the Dow Chemical Company have chosen a bottom-up approach to patterning emissive polymers, aiming to solve some of the problems that plague Solution-based protocols for OLED manufacture.

The team started with a layer of indium tin oxide and used light-activated chemistry to pinpoint specific locations on the surface for polymer growth. Key to the success of this approach are designer iridium photocatalysts that serve two roles: First, as the catalyst to build the emissive brush polymers, and then as a necessary dopant for the resulting OLED arrays.

The researchers demonstrated the feasibility of their system by fabricating functional multi-colored OLED arrays and stated that their method may enable high throughput manufacturing of OLEDs using many technologies, including inkjet printing, in the future.

The 4th International TADF Workshop 2019The 4th International TADF Workshop 2019