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Novel host materials based on phenanthroimidazole derivatives for highly efficient green phosphorescent OLEDs

Paper ID Volume ID Publish Year Pages File Format Full-Text
26451 43953 2013 7 PDF Available
Title
Novel host materials based on phenanthroimidazole derivatives for highly efficient green phosphorescent OLEDs
Abstract

•Novel host materials based on arylamine and phenanthroimidazole moieties.•High triplet energy hosts for phosphorescent OLEDs.•Highly efficient green phosphorescent OLEDs.

Two novel host materials, 2-(4,4″-di(9H-carbazol-9-yl)-[1,1′:3′,1″-terphenyl]-5′-yl)-1-(4-(trifluoro-methyl)phenyl)-1H-phenanhro[9,10-d]imidazole (DCzBPI) and N4,N4,N4″,N4″-tetraphenyl-5′-(1-(4-(trifluoromethyl)phenyl))-1H-phenanthro-[9,10-d] (DTPABPI), were designed and synthesized. The electroluminescence (EL) characteristics by using them as host materials were investigated. Results were found both of them showed good performance, especially for DCzBPI. The maximal external quantum efficiency is up to 21.2% and the brightness is up to 63,610 cd/m2 with current efficiency of 53.8 cd A−1.

Keywords
Host materials; Phosphorescent organic light-emitting diodes (PhOLEDs); External quantum efficiency (EQE); Triplet energy level
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Novel host materials based on phenanthroimidazole derivatives for highly efficient green phosphorescent OLEDs
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 268, 15 September 2013, Pages 37–43
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us