Two kinds of electroluminescent(EL), PU-BCN as a polymer material and D-BCN as a dye were synthesized. These materials were composed of the same chromophore with two cyano groups and two triphenylamine groups. Single-layer device(SL), indium-tin oxide...
Two kinds of electroluminescent(EL), PU-BCN as a polymer material and D-BCN as a dye were synthesized. These materials were composed of the same chromophore with two cyano groups and two triphenylamine groups. Single-layer device(SL), indium-tin oxide(ITO)/PU-BCN or D-BCN/ MgAg device and two types of double-layer device were fabricated. (ITO/PU-BCN or D-BCN/oxadiazole derivative as an electron transport layer/MgAg in the case of DL-E device, and ITO/triphenylamine derivative as a hole transport layer/D-BCN/MgAg in the case of DL-H device) Two kinds of materials revealed excellent EL characteristics in the EL device. The comparison of the luminance -current density of two different materials, PU-BCN and D-BCN showed similar EL characteristics in the high current density. EL maximum peaks of two materials were detected at the red emission region of about 640nm.