TITLE

Organic light-emitting diode with liquid emitting layer

AUTHOR(S)
Denghui Xu; Adachi, Chihaya
PUB. DATE
August 2009
SOURCE
Applied Physics Letters;8/3/2009, Vol. 95 Issue 5, p053304
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We demonstrate an original organic light-emitting diode (OLED) having a neat liquid host of 9-(2-ethylhexyl)carbazole (EHCz) doped with a guest emitter of 5,6,11,12-tetraphenylnapthacene (rubrene). The device structure is composed of indium tin-oxide (ITO)/poly(3,4-ethylenedioxythiophene):poly(styrenesulphonate)/EHCz:rubrene/Cs2CO3/ITO. We demonstrate that the liquid organic semiconducting layer surely transports charge carriers, leading to electroluminescence from rubrene with the highest external quantum efficiency of ηext=0.03% at a current density of 0.26 mA/cm2. Our demonstration of the liquid-OLEDs will open another possibility of organic semiconductors and light-emitting applications.
ACCESSION #
43594014

 

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