Organic EL device with a dye-doped polymeric hole transporting layer, i.e. a device consisting of ITO / dye doped Poly[N-(p-3-diphenylamine)phenylmethacrylamide](PDPMA) / Alq(3), was fabricated and investigated. Using three different fluorescent dyes (Nile red, DCM, and TPP) at various compositions as guest emitting materials, the relations among the spectral overlap, emission characteristics, the physical, chemical and morphological properties were studied.