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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Editor: Zhizhan Xu
  • Vol. 11, Iss. 6 — Jun. 1, 2013
  • pp: 062302–

Position dependence of extraction efficiency in organic light-emitting diodes with photonic crystal structure

Saijun Huang, Zhicheng Ye, Jiangang Lu, Yikai Su, Chaoping Chen, and Gufeng He  »View Author Affiliations


Chinese Optics Letters, Vol. 11, Issue 6, pp. 062302- (2013)


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Abstract

We demonstrate by finite-difference time-domain simulations that a one-dimensional (1D) photonic crystal (PC) structure between glass substrate and indium tin oxide layer can improve the light extraction efficiency of organic light-emitting diodes. The extraction efficiency depends on the emitters' positions varying laterally in a unit cell of PC. The highest efficiency is obtained when the emitters are under higher refractive index strips. Efficiency decreases when the emitters shift to lower refractive index strips. Simulations for both transverse magnetic and transverse electric modes indicate that when emitters are close to the middle of the higher refractive index strips, the guided wave transmits with less divergence and inhibited reflection because of the guiding effect of higher refractive index strips. A modified method that considers the position effects is proposed to calculate the extraction efficiency more precisely.

© 2013 Chinese Optics Letters

OCIS Codes
(160.4890) Materials : Organic materials
(230.0230) Optical devices : Optical devices
(230.7370) Optical devices : Waveguides
(310.2790) Thin films : Guided waves
(050.5298) Diffraction and gratings : Photonic crystals
(160.5298) Materials : Photonic crystals

ToC Category:
Optical Devices

Citation
Saijun Huang, Zhicheng Ye, Jiangang Lu, Yikai Su, Chaoping Chen, and Gufeng He, "Position dependence of extraction efficiency in organic light-emitting diodes with photonic crystal structure," Chin. Opt. Lett. 11, 062302- (2013)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-11-6-062302


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