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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 9 — May. 6, 2013
  • pp: 11078–11085

Solution-processed single-emitting-layer white organic light-emitting diodes based on small molecules with efficiency/CRI/color-stability trade-off

Qiang Fu, Jiangshan Chen, Hongmei Zhang, Changsheng Shi, and Dongge Ma  »View Author Affiliations

Optics Express, Vol. 21, Issue 9, pp. 11078-11085 (2013)

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By doping blue, green and red dyes into a bipolar host system, a simple single-EML white organic light-emitting diode (WOLED) with efficiency and color-stability trade-off was achieved by solution process. The resulting WOLED shows high efficiency (i.e., 36.5 cd/A and 15.7% at 1141 cd/m2), reduced efficiency roll-off (i.e., critical current density jc is as high as 140 mA/cm2) and, especially, extremely stable electroluminescence spectra with a slight CIE coordinate variation of (0.404 ± 0.004, 0.436 ± 0.001). The superior performance of the WOLED is attributed to the effective suppression of exciton quenching and charge trapping in the bipolar EML.

© 2013 OSA

OCIS Codes
(230.3670) Optical devices : Light-emitting diodes
(310.1860) Thin films : Deposition and fabrication
(310.6845) Thin films : Thin film devices and applications

ToC Category:
Optical Devices

Original Manuscript: January 29, 2013
Revised Manuscript: April 3, 2013
Manuscript Accepted: April 22, 2013
Published: April 29, 2013

Qiang Fu, Jiangshan Chen, Hongmei Zhang, Changsheng Shi, and Dongge Ma, "Solution-processed single-emitting-layer white organic light-emitting diodes based on small molecules with efficiency/CRI/color-stability trade-off," Opt. Express 21, 11078-11085 (2013)

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