The photoluminescent and electroluminescent properties of a new Europium complex

A new rare earth (RE) complex Eu(BSA)3phen was synthesized. A narrow emission band from a device structure of ITO/PVK: RE complex/LiF/Al was observed, in which poly N-vinylcarbazole (PVK) was used to improve the film-forming and hole-transporting property of the Eu(BSA)3phen. Excitation, photoluminescence (PL) and electroluminescence (EL) characteristics of the device were studied and an energy transfer from PVK to europium complex was proposed. Effects of doping ratios of Eu(BSA)3phen on the device performance were also studied.