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A Versatile Triphenylamine/Fluoranthene-Based Derivative as a Nondoped Green-Emitting, Hole-Transporting Interlayer for Electroluminescent Devices.
- Source :
- Chemistry - An Asian Journal; Jun2013, Vol. 8 Issue 6, p1253-1258, 6p
- Publication Year :
- 2013
-
Abstract
- A new triphenylamine-bridged fluoranthene derivative, 4-(7,10-diphenylfluoranthen-8-yl)- N-[4-(7,10-diphenylfluoranthen-8-yl)phenyl]- N-phenylaniline (BDPFPA), with a high glass transition temperature of 220 °C has been synthesized and characterized. BDPFPA is a highly fluorescent and versatile material that can be used as a nondoped green emitter and as a hole transporter. BDPFPA was used in a standard trilayer device as the emitting layer, which showed a low turn-on voltage (<3 V) and a high efficiency of 11.6 cd A<superscript>−1</superscript>. The device also shows little efficiency roll-off at high brightness. For example, the efficiency can still be maintained at 11.4 cd A<superscript>−1</superscript> (5.4 lm W<superscript>−1</superscript>) at a brightness of 10 000 cd m<superscript>−2</superscript>. These results are among the best reported for nondoped fluorescent green organic light-emitting diodes. A simple bilayer device, in which BDPFPA serves as a hole-transporting layer, has a maximum power efficiency of 3.3 lm W<superscript>−1</superscript> and the performance is nearly 40 % higher than that of an N, N′-bis(1-naphthyl)- N, N′- diphenyl-1,1′-biphenyl-4,4′-diamine (NPB)-based standard device. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 18614728
- Volume :
- 8
- Issue :
- 6
- Database :
- Complementary Index
- Journal :
- Chemistry - An Asian Journal
- Publication Type :
- Academic Journal
- Accession number :
- 87733203
- Full Text :
- https://doi.org/10.1002/asia.201300002