title: Light extraction efficiency of a top-emission organic light-emitting diode with an Yb/Au double-layer cathode and an opaque Si anode.
abstract: We have computed the transmittances of four types of cathode--Yb/Au, Al/Au, Yb/Ag, and Al/Ag double layers--and the light extraction efficiencies of the top-emission organic light-emitting diodes with these cathodes, respectively, based on the characteristic matrix method and the dissipation spectrum model. Computations show that the Yb/Au cathode has a markedly higher transmittance than the other three types of cathode when the Yb and Au thicknesses in the Yb/Au cathode are, respectively, equal to the Al (or Yb) and Au (or Ag) thicknesses in the other three types of cathode. The power lost to the Yb/Au cathode due to the surface plasmon polaritons is the lowest, and hence the device with the Yb/Au cathode has the highest extraction efficiency. The transmittances for the four cathodes are also measured experimentally.
authors.affiliation: School of Physics, State Key Laboratory for Mesoscopic Physics, Peking University, China. rangz@pku.edu.cn
authors.forename: G Z
authors.initials: GZ
authors.lastname: Ran
authors.forename: G L
authors.initials: GL
authors.lastname: Ma
authors.forename: Y H
authors.initials: YH
authors.lastname: Xu
authors.forename: L
authors.initials: L
authors.lastname: Dai
authors.forename: G G
authors.initials: GG
authors.lastname: Qin