Flexible arrays of submicrometer-sized polymeric light emitting diodes

`Communication: Arrays of small polymer-based LEDs have been produced using a technique based on polymer self-organization. The active component, a polybithiophene, is shown to form small (50-200 nm) islands in a PMMA matrix when the two materials are mixed in an appropriate ratio. These islands become light emitters when electron- and hole-injecting contacts are applied. The generation of the arrays is described and the use of polymer-based hole-injecting contacts, which provide mechanical flexibility, is discussed.