Electroluminescent behaviour of polydiacetylene films

We observed the electroluminescent behavior of films of the polydiacetylene poly[1,6-bis(3,6-dipalmitoyl-N-carbazolyl)-2,4-hexadiyne](polyDPCHD) by preparing organic light-emitting diodes (OLED) based on a single emitting polymer layer. We measured their optical and electrical characteristics and obtained a typical power efficiency of 10-6. The observed rapid quenching of the electroluminescence was supposed to be related to the formation of charged traps enhanced both by local disorder of polymer chains and by current flow.