CONJUGATED POLYMER ELECTROLUMINESCENCE - TECHNICAL ASPECTS FROM BASICDEVICES TO COMMERCIAL PRODUCTS

Conjugated polymers have achieved much attention as light-emitting and charge transporting active layers in light-emitting polymer (LEP) dev ices. So far, the main focus of research and development in this area has been to improve device efficiency and to achieve different emissio n colours. For a successful commercialization of the technology, howev er, a variety of other aspects are equally great important. The domina nt issues are device operating life and shelf life but other challenge s arise in the areas of, for example, substrate conditioning, large sc ale coating of thin polymer layers and electrodes, encapsulation and e nvironmental testing. This paper will address a selection of these eng ineering issues.