Novel organic electroluminescent device using a new Eu3+ polymer as emitting laser

In this paper, a novel Eu3+ polymer named PRL basing on a new Eu-containing monomer was synthesized and was used as a red light-emitting material in our organic electroluminescent device with single layer structure of ITO/PRL/Al. This material had strong photoluminescence, good chromaticity and can transport both holes and electrons. Being a polymer, the device made by use simple spin-coating method in stead of the usual doped spin-coating and vacuum deposition. The brightness of 80 cd/m2 was achieved at the voltage of 26 V. And we try to explain the mechanism of this EL device according to its photoluminescence, electroluminescence, B-V and I-V characteristic. And we also measured its mobility and explained the reason of its relatively high drive voltage and low luminescence