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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 35, Iss. 14 — Jul. 15, 2010
  • pp: 2436–2438

Highly efficient white polymer light-emitting devices based on wide bandgap polymer doped with blue and yellow phosphorescent dyes

Gang Cheng, Teng Fei, Yu Duan, Yi Zhao, Yuguang Ma, and Shiyong Liu  »View Author Affiliations


Optics Letters, Vol. 35, Issue 14, pp. 2436-2438 (2010)
http://dx.doi.org/10.1364/OL.35.002436


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Abstract

We realize high luminous efficiency (LE) in white polymer light-emitting devices by employing a wide bandgap polymer P36HCTPSi as host and introducing a blue–yellow two-color system for obtaining white emission. Phosphorescent dopants bis[(4,6-difluorophenyl)pyridinato-N, C 2 ]-(picolinato)iridium(III) (FIrpic) and iridium(III) bis(2-(9,9’-spirobi[fluorene]-7-yl)pyridine-N, C 2 ) acetylacetonate [ Ir ( SBFP ) 2 (acac)] were used as blue and yellow emitters, respectively. Electroluminescent spectra and LE were both affected by Ir ( SBFP ) 2 (acac) concentration; the device with low concentration ( 0.4 wt . % ) showed white emission with a LE of 24.1 cd / A at 1000 cd / m 2 , while the one with high concentration ( 4 wt . % ) emitted yellowish-white light with a higher LE of 47.3 cd / A at 1000 cd / m 2 .

© 2010 Optical Society of America

OCIS Codes
(160.4890) Materials : Organic materials
(230.3670) Optical devices : Light-emitting diodes
(250.5230) Optoelectronics : Photoluminescence
(260.3800) Physical optics : Luminescence

ToC Category:
Optical Devices

History
Original Manuscript: April 8, 2010
Revised Manuscript: June 7, 2010
Manuscript Accepted: June 14, 2010
Published: July 13, 2010

Citation
Gang Cheng, Teng Fei, Yu Duan, Yi Zhao, Yuguang Ma, and Shiyong Liu, "Highly efficient white polymer light-emitting devices based on wide bandgap polymer doped with blue and yellow phosphorescent dyes," Opt. Lett. 35, 2436-2438 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-14-2436


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