Organic light-emitting diode with liquid emitting layer

Denghui Xu; Adachi, Chihaya
August 2009
Applied Physics Letters;8/3/2009, Vol. 95 Issue 5, p053304
Academic Journal
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.


Related Articles

  • Hybrid p-n junction light-emitting diodes based on sputtered ZnO and organic semiconductors. Na, Jong H.; Kitamura, M.; Arita, M.; Arakawa, Y. // Applied Physics Letters;12/21/2009, Vol. 95 Issue 25, p253303 

    We fabricated light-emitting hybrid p-n junction devices using low temperature deposited ZnO and organic films, in which the ZnO and the organic films served as the n- and p-type component, respectively. The devices have a rectification factor as high as ∼103 and a current density greater...

  • Mixing effect of hole-injecting and hole-transporting materials on the performance and lifetime of organic light-emitting devices. Youngkyoo Kim; Eonseok Oh; Hyuntaek Lim; Chang-Sik Ha // Applied Physics Letters;1/23/2006, Vol. 88 Issue 4, p043504 

    A hole-injecting-transporting layer (HITL), which was prepared by in situ mixing hole-injecting and hole-transporting (HTM) materials upon evaporating in vacuum, has been attempted to reduce the number of organic layers in organic light-emitting devices (OLEDs). OLEDs with HITLs showed lower...

  • A fluctuational electrodynamics model for the optimization of light-extraction efficiency in thin-film light-emitting diodes. Heikkilä, Oskari; Oksanen, Jani; Tulkki, Jukka // Journal of Applied Physics;Dec2013, Vol. 114 Issue 22, p223108 

    The rapid development of thin film light-emitting diodes (LEDs) has enabled the enhancement of the light extraction beyond geometrical limits but more quantitative understanding of the underlying optical processes is required to fully optimize the extraction. We present first-principle...

  • Theoretical design study on photophysical property on oligomers based on spirobifluorene and carbazole-triphenylamine for PLED applications. Xie, Xiao-Hua; Shen, Wei; He, Rong-Xing; Li, Ming // Journal of Molecular Modeling;Jan2013, Vol. 19 Issue 1, p139 

    The photophysical properties of five blue light-emitting polymers based on spirobifluorene applied in polymer light-emitting diodes (PLED) materials have been studied by quantum chemistry. In order to understand the intrinsic reasons for the different performances displayed by the polymers, we...

  • Making light work of illumination. Excell, Jon // Engineer (00137758);10/10/2003, Vol. 292 Issue 7637, p45 

    No abstract available.

  • A Light-Emitting Future. Cristol, Hope // Futurist;Sep2002, Vol. 36 Issue 5, p6 

    Forecasts the use of light-emitting diodes (LED). Replacement of incandescent and fluorescent lights by LED; Discussion of the technology called solid-state lighting; Advantages and disadvantages of LED.

  • worldnews.  // Solid State Technology;Apr2012, Vol. 55 Issue 3, p6 

    The article offers world news briefs related to solid state technology in 2012 including the projected revenue of 316 billion dollars for semiconductors, the expected decline of semiconductor fab equipment spending and the light emitting diode (LED) subsidy program of China.

  • The lowdown on LEDs. Baxter, John // Commercial Carrier Journal;Oct2007, Vol. 164 Issue 10, p34 

    The article discusses the applications of light-emitting diode (LED) technology in the commercial trucking business. Brad Van Riper of Truck-Lite explained the usage of LED has meant that lighting dropped off the top 10 list of maintenance areas in frequency and cost. The key advantages to LED...

  • Organic LEDs make debut in 852x600 pixel microdisplay. Bush, Steve // Electronics Weekly;2/6/2002, Issue 2038, p13 

    Reports on the organic light emitting diodes that were featured in the 2002 International Solid State Circuits Conference in a pixel microdisplay from Tality and eMagin. Description of the silicon backpane device; Approach used for developing a suitable pixel driver.


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics