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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 45, Iss. 23 — Aug. 10, 2006
  • pp: 5871–5876

Light extraction efficiency of a top-emission organic light-emitting diode with an Yb∕Au double-layer cathode and an opaque Si anode

G. Z. Ran, G. L. Ma, Y. H. Xu, L. Dai, and G. G. Qin  »View Author Affiliations


Applied Optics, Vol. 45, Issue 23, pp. 5871-5876 (2006)
http://dx.doi.org/10.1364/AO.45.005871


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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.

© 2006 Optical Society of America

OCIS Codes
(160.3900) Materials : Metals
(230.3670) Optical devices : Light-emitting diodes
(240.6680) Optics at surfaces : Surface plasmons
(260.3910) Physical optics : Metal optics
(310.6870) Thin films : Thin films, other properties

History
Original Manuscript: August 31, 2005
Revised Manuscript: March 5, 2006
Manuscript Accepted: March 7, 2006

Citation
G. Z. Ran, G. L. Ma, Y. H. Xu, L. Dai, and G. G. Qin, "Light extraction efficiency of a top-emission organic light-emitting diode with an Yb/Au double-layer cathode and an opaque Si anode," Appl. Opt. 45, 5871-5876 (2006)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-23-5871

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