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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 2 — Jan. 22, 2007
  • pp: 608–615

A highly color-stability white organic light-emitting diode by color conversion within hole injection layer

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


Optics Express, Vol. 15, Issue 2, pp. 608-615 (2007)
http://dx.doi.org/10.1364/OE.15.000608


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Abstract

We demonstrated a novel-structure white organic light-emitting devices (WOLEDs) composed of a greenish blue fluorescent emitting layer and a red fluorescent dye-doped hole injection layer. The spectra of WOLEDs show no change at a wide range current density operation and long-term continuous operation. We concluded that carriers recombined inside the emitting layer in the WOLEDs to produce a greenish blue electroluminescence (EL), and a part of the EL was absorbed by the red fluorescent guest doped hole injection layer and converted into red photoluminescence (PL); the whole white emission from the device was a mixture of the greenish blue EL and red PL.

© 2007 Optical Society of America

OCIS Codes
(230.3670) Optical devices : Light-emitting diodes
(230.3990) Optical devices : Micro-optical devices
(230.4170) Optical devices : Multilayers

ToC Category:
Optical Devices

History
Original Manuscript: October 24, 2006
Revised Manuscript: December 10, 2006
Manuscript Accepted: January 8, 2007
Published: January 22, 2007

Citation
C. Li, M. Ichikawa, B. Wei, Y. Taniguchi, H. Kimura, K. Kawaguchi, and K. Sakurai, "A highly color-stability white organic light-emitting diode by color conversion within hole injection layer," Opt. Express 15, 608-615 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-2-608


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