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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 22 — Oct. 29, 2007
  • pp: 14422–14430

Study of color-conversion-materials in chromatic-stability white organic light-emitting diodes

C. Li, H. Kimura, T. Saito, K. Sakurai, B. Wei, M. Ichikawa, and Y. Taniguchi  »View Author Affiliations

Optics Express, Vol. 15, Issue 22, pp. 14422-14430 (2007)

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We have fabricated high efficiency white organic light-emitting diodes (WOLEDs) with red-dye doped hole injection layer (HIL) and blue emissive layer. We investigated the carrier transport and photoluminescence efficiency in the device of single-layer HIL with different red dye species, bis(4-diphneylamino-phenyl)-perylene-3-yl-amine,4-(dicyanomethylene)-2-t-butyl-6-(1,1,7,7-tetramethyljulolidyl-9enyl)-4H-pyran and a dopant material of fused aromatic ring (P1) provided by Idemitsu Kosan in 4,4′,4″-tris[2-naphthyl(phenyl)amino]triphenylamine with a varied concentration. It was found that 25-% wt P1 in HIL has better electro-optical characteristics. Furthermore, we have fabricated three WOLEDs of chromatic-stability with different thickness of HIL layer. High chromatic-stability CCM-WOLEDs have been achieved, which can be applied for lightening and backlight for flat panel display.

© 2007 Optical Society of America

OCIS Codes
(160.4890) Materials : Organic materials
(230.3670) Optical devices : Light-emitting diodes
(310.6860) Thin films : Thin films, optical properties

ToC Category:
Thin Films

Original Manuscript: July 16, 2007
Revised Manuscript: October 1, 2007
Manuscript Accepted: October 5, 2007
Published: October 18, 2007

C. Li, H. Kimura, T. Saito, K. Sakurai, B. Wei, M. Ichikawa, and Y. Taniguchi, "Study of color-conversion-materials in chromatic-stability white organic light-emitting diodes," Opt. Express 15, 14422-14430 (2007)

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