Realization of a blue‐light‐emitting device using poly(<i>p</i>‐phenylene)

Abstract

Blue light emission from poly( p ‐phenylene) , PPP, at room temperature is reported. Thin films of the polymer have been incorporated into an electroluminescent device (see figure) which constitutes the first polymer‐based blue‐light‐emitting diode (LED), a significant step towards, for example, the development of full‐color LED computer screens. The polymer LED has advantages of stability over its low‐molecular‐weight anologues and ease of fabrication over inorganic semiconductor‐based devices. magnified image