Realization of a blue-light-emitting device using poly(p-phenylene)


  • We gratefully acknowledge the financial support of the Jubiläumsfondsder der Üsterreichischen Nationalbank under the project Nr. 3803.

  • Dedicated to Professor Erich Krautz on the occasion of his 85th birthday.


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.

original image