Issue 24, 2013

Spirally configured cis-stilbene/fluorene hybrids as ambipolar, fluorescent materials for organic light emitting diode applications

Abstract

A new class of cis-stilbene/fluorene spiro hybrid systems with paired diphenylamino donor and cyano, N-phenylbenzimidazole, dimesitylboranyl, or β,β-diphenylethenyl acceptor units was synthesized as ambipolar materials for organic light-emitting diode applications. When coupled with hole transporting 4,4′-bis(1-naphthylphenylamino)-1,1′-biphenyl (α-NPB) and electron transporting 2,2′,2′′-(1,3,5-benzenetriyl)-tris(1-phenyl-1-H-benzimidazole) layers, they served as one of the best bluish green and pure green emitting layers with excellent external quantum efficiencies of 3.9–5.2%, electroluminescent brightness of 2202–3069 cd m−2, luminance efficiencies of 11.0–15.8 cd A−1, and power efficiencies of 5.7–6.6 lm W−1 at 20 mA cm−2, which were about 2–3 times better than those based on standard α-NPB/tris(8-hydroxyquinoline)aluminum bilayer devices.

Graphical abstract: Spirally configured cis-stilbene/fluorene hybrids as ambipolar, fluorescent materials for organic light emitting diode applications

Supplementary files

Article information

Article type
Paper
Submitted
05 Apr 2013
Accepted
25 Apr 2013
First published
26 Apr 2013

RSC Adv., 2013,3, 9381-9390

Spirally configured cis-stilbene/fluorene hybrids as ambipolar, fluorescent materials for organic light emitting diode applications

C. Chen, W. Chao, H. Liu, Y. Wei, J. Jou and S. Kumar, RSC Adv., 2013, 3, 9381 DOI: 10.1039/C3RA41642A

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