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Adv Mater. 2014 Aug 6;26(29):5062-6. doi: 10.1002/adma.201401621. Epub 2014 Jun 27.

Low-driving-voltage blue phosphorescent organic light-emitting devices with external quantum efficiency of 30%.

Author information

1
Research Center for Organic Electronics (ROEL), Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata, 992-8510, Japan.

Abstract

A homoleptic iridium (iii) tris(pheny-limidazolinate) complex realizes a high EQE of 30%, a low turn-on voltage of 2.5 V, and a small efficiency roll-off in a blue organic light-emitting device (OLED). This device also shows high power efficiencies over 75 lm W(-1) and an ideal light distribution pattern at 100 cd m(-2).

KEYWORDS:

blue phosphorescence; high external quantum efficiency; high power efficiency; low driving voltages; organic light-emitting diodes; phenylimidazole ligands

PMID:
24975629
DOI:
10.1002/adma.201401621
[Indexed for MEDLINE]

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