Organic Light Emitting Diodes Using a Single Wall Nanotube Film Anode

POSTER

Abstract

To investigate single-walled carbon nanotube (SWNT) films as a replacement for indium tin oxide (ITO) as the anode in organic light emitting diodes (OLEDs), OLEDs constructed on SWNT films are compared to OLEDs on PEDOT:PSS/ITO. It is found that a simple, single polymer based device design of SWNT /poly[2-methoxy-5-(2'-ethyl-hexyloxy)-1,4-phenylene vinylene] (MEH-PPV)/Ca/Al can perform comparably with PEDOT:PSS/ITO OLEDs. For thick polymer layers of 300nm, both devices achieve a maximum light output of 700 cd/m$^{2}$ with efficiencies between 0.7-0.8 cd/A. The ITO device performance improves when a thinner MEH-PPV layer is used however variations in the SWNT film surface cause shorting if the MEH-PPV layer is substantially reduced in the SWNT anode devices. The advantages of a SWNT anode as well as the potential for future improvements will be discussed.

Authors

  • Evan Donoghue

    • Dept. of Physics, University of Florida

  • Ken Graham

    • Dept. of Chemistry, University of Florida

  • Matthew Craps

    • Dept. of Physics, University of Florida

  • Zhuangchun Wu

    • Dept. of Physics, University of Florida

  • Ryan M. Walczak

    • Dept. of Chemistry, University of Florida

  • John R. Reynolds

    • Dept. of Chemistry, University of Florida

  • Andrew G. Rinzler

    • Dept of Physics, University of Florida