Highly efficient non-doped blue-light-emitting diodes based on an anthrancene derivative end-capped with tetraphenylethylene groups

Ping I. Shih*, Chu Ying Chuang, Chen Han Chien, Wei-Guang Diau, Ching Fong Shu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

220 Scopus citations

Abstract

A novel blue-emitting material, 2-tert-butyl-9,10-bis[4-(1,2,2- triphenylvinyl)phenyl]anthracene (TPVAB), which contains an anthracene core and two tetraphenylethylene end-capped groups, has been synthesized and characterized. Owing to the presence of its sterically congested terminal groups, TPVAn possesses a high glass transition temperature (155°C) and is morphologically stable. Organic light-emitting diodes (OLEDs) utilizing TPVAn as the emitter exhibit bright saturated-blue emissions (Commission Internationale de L'Eclairage (CIE) chromaticity coordinates of x=0.14 and y=0.12) with efficiencies as high as 5.3% (5.3 cd A-1) - the best performance of non-doped deep blue-emitting OLEDs reported to date. In addition, TPVAn doped with an orange fluorophore served as an authentic host for the construction of a white-light-emitting device that displayed promising electroluminescent characteristics: the maximum external quantum efficiency reached 4.9 % (13.1 cd A-1) with CIE coordinates located at (0.33, 0.39).

Original languageEnglish
Pages (from-to)3141-3146
Number of pages6
JournalAdvanced Functional Materials
Volume17
Issue number16
DOIs
StatePublished - 5 Nov 2007

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