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

摘要

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/A1 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/A1 device is a photo-sensitive diode.