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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 33, Iss. 5 — Mar. 1, 2008
  • pp: 503–505

Distribution of radiation from organic light-emitting diode structures with wavelength-scale gratings as a function of azimuth and polar angles

Lee Tutt and Joseph F. Revelli  »View Author Affiliations


Optics Letters, Vol. 33, Issue 5, pp. 503-505 (2008)
http://dx.doi.org/10.1364/OL.33.000503


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Abstract

The angular distribution of radiation emitted from organic electroluminescent diodes fabricated on substrates with wavelength-scale gratings was measured using an optical Fourier transform instrument. A simple geometrical model is derived that specifies the polar angle of the exiting photon as a function of the azimuth angle, the grating pitch, the wavelength of light, and the effective index of the refraction of the light emitted by the fluorescing excitons. The radiation pattern of the extracted light is shown to fit that predicted by the model if one assumes that it comes from surface plasmon polaritons and bound TE waveguide modes.

© 2008 Optical Society of America

OCIS Codes
(050.2230) Diffraction and gratings : Fabry-Perot
(160.4890) Materials : Organic materials
(230.1950) Optical devices : Diffraction gratings
(230.3670) Optical devices : Light-emitting diodes
(240.6680) Optics at surfaces : Surface plasmons

ToC Category:
Optical Devices

History
Original Manuscript: October 11, 2007
Revised Manuscript: January 18, 2008
Manuscript Accepted: January 26, 2008
Published: February 28, 2008

Citation
Lee Tutt and Joseph F. Revelli, "Distribution of radiation from organic light-emitting diode structures with wavelength-scale gratings as a function of azimuth and polar angles," Opt. Lett. 33, 503-505 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-5-503


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References

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  12. Sample 1 layers in micrometers: /glass/0.1Ag/0.002 MoO3/0.230 NPB/0.03NPB: 0.00075 YD3/0.0368 BH3: 0.0028 NPB: 0.0004 TBP/0.010 ALQ/0.027 Mg: 0.003 Ag/. Sample 2 layers: /glass/0.1 Ag/0.001 CFx/0.16 NPB/0.02 ALQ: 0.0002 C545T/0.02 ALQ/0.036 Mg: 0.004 Ag/. Sample 3 layers: /glass/0.1 Ag/0.001 MoO3/0.26 NPB/0.020 ALQ/0.027 Mg: 0.003 Ag/. CFx: plasma deposited perfluorcarbon polymer. TBP: 2,5,8,11-tetra-t-butylperylene. C545T: 10-(2-benzothiazolyl)-2,3,6,7-tetrahydro-1,1,7,7-tetramethyl-1H,5H,11H-[1] benzopyrano [6,7,8-ij]quinolizin-11-one. BH3 and YD3 are available from Eastman Kodak Company, Rochester, NY.

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