Efficient deep blue emitters for organic electroluminescent devices

Meng Huan Ho*, Yao Shan Wu, Shih Wen Wen, Teng-Ming Chen, Chin H. Chen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

Highly efficient deep blue organic light emitting devices have been fabricated with a 4-(styryl)biphenyl-core based fluorescent dopant (SK-1) in the wide band gap 2-methyl-9,10-di(1-naphthyl)anthracene (α,α -MADN) host system which achieved an electroluminescence efficiency of 5.0 cdA and an external quantum efficiency of 4.2% at 20 mA cm2 with a saturated blue Commission Internationale de l'Eclairage coordinates of (0.15, 0.14) and a half-decay lifetime of 8000 h at an initial brightness of 100 cd m2. The current efficiency and electroluminescent color of SK-1 doped devices have been shown to be essentially immune to drive current density.

Original languageEnglish
Article number083515
JournalApplied Physics Letters
Volume91
Issue number8
DOIs
StatePublished - 31 Aug 2007

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