Electrical and Optical Response Properties of MEH-PPV Semiconductor Polymer Schottky Diodes

Report No. ARL-TR-5591
Authors: Fred Semendy, Greg Meissner, and Priyalal Wijewarnasuriya
Date/Pages: July 2011; 14 pages
Abstract: Diodes made with poly(2-methoxy-5(2'-ethyl)hexoxy-phenylenevinylene) (MEH-PPV) using indium tin oxide (ITO) as anode and aluminum (Al) as cathode have been fabricated and investigated for current-voltage (I-V) characteristics and optical responsivity. The diode exhibits non-ideal behavior with ideality factor of 0.85 eV. The I-V characteristics of the ITO/MEH-PPV/Al diode without light and with different illumination intensities give an open circuit voltage (Voc) and a short circuit current of (Isc). This suggests that that this diode is a photovoltaic under light illumination. Variations in the responsivity indicate that the ITO/MEH-PPV/Al device is a photo-sensitive diode.
Distribution: Approved for public release
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Last Update / Reviewed: July 1, 2011