Characteristics of Organic El Device Using A Pppma Blue Light Emitting Polymer Doped with Fluorescent Dyes

Abstract

We have synthesized a novel blue light emitting poly(N-(p-perylene)phenylmethacrylamide)(PPPMA)polymer having a perylene moiety in the side chain. The prepared polymer was very soluble in most organic solvents such as monochlorobenzene, THF, chloroform and benzene. A single-layered organic electroluminescence(EL)device consisting of ITO/PPPMA polymer + fluorescent dye dopants(DCM or Coumarin 6)/Al was fabricated, and then the effect of dye doping on the EL characteristics was examined. The luminescence of the doped devices was significantly influenced by the amount and structure of fluorescent dye molecules. The EL devices emitted red light(597 nm)and green light(558 nm)corresponding to the fluorescent dye molecules. Especially, EL device containing a DCM of 3 wt%emitted a red light with the high brightness of 600 cd/m2at a DC 15 V.