Highly Efficient White Polymer Light-Emitting Diodes with a Conjugated Polyelectrolyte as Host Polymer

Qiaol Niu; Ling Zhi Zhao; Yong Zhang; Xin Li; Yong Li Wang

doi:10.4028/www.scientific.net/AMR.516-517.1881

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 516-517Highly Efficient White Polymer Light-Emitting...

Highly Efficient White Polymer Light-Emitting Diodes with a Conjugated Polyelectrolyte as Host Polymer

Abstract:

In this presentation, efficient white polymer-light-emitting diodes have been fabricated with high work-function cathode. The device structure consists of ITO/poly(ehtlenedioxythiophene) : poly(styrene sulfonic acid) (PEDOT : PSS) / poly(N-vinylcarbazole) (PVK) / poly[(9,9-bis(30-(N,N-dimethylamino)propyl)-2,7-fluorene)-alt- 2,7-(9,9-dioctylfluorene)] (PFN): bis(2-(4,6-difluorophenyl)-pyridinato-N,C2') picolinate (FIrpic): poly[2,7-(9,9-dioc-tylfluorene)-co-(4,7-dithien-2-yl)-2,1,3-benzothiadiazole] (PFODBT15)/Al. By tuning the weight ratio of FIrpic to PFO-DBT15 in PFN, white light was obtained. The 1931 CIE coordinates of the white lights obtained were (0.37, 0.41) and (0.36, 0.42). The maximum luminous efficiency was 3 cd/A.

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Periodical:

Advanced Materials Research (Volumes 516-517)

Pages:

1881-1884

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.516-517.1881

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Online since:

May 2012

Authors:

Qiaol Niu, Ling Zhi Zhao, Yong Zhang, Xin Li, Yong Li Wang

Keywords:

Conjugated Polyelectrolyte, Phosphorescent, White Polymer Light-Emitting Diodes

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