Extracting electrode space charge limited current: Charge injection into conjugated polyelectrolytes with a semiconductor electrode

Effects of space-charge at the conjugated polymer/electrode interface

Films of the polymer poly(4-dicyanomethylene-4H-cyclopenta[2,1-b:3,4-b’]dithiophene (PCDM) were electro-deposited onto indium tin oxide (ITO) coated glass substrates. The formation of a polymer was confirmed by the presence of an absorption band at ~900 nm (~1.4 eV) previously attributed to a * transition. Diodes formed by evaporating aluminium counterelectrodes onto the films displayed non-...

Non-uniform space charge limited current injection into a nano contact solid

We have developed a two-dimensional (2D) non-uniform model to study the space charge limited (SCL) current injection into a trap-filled solid of nano-contact, such as organic materials and dielectrics. Assuming a solid of length D with a contact of width W, the enhancement over the well-known 1D uniform model is calculated as a function of W/D for different material properties, such as the diel...

Spin injection in a semiconductor through a space-charge layer

http://dx.doi.org/10.1016/j.sse.2014.06.035 0038-1101/ 2014 Elsevier Ltd. All rights reserved. ⇑ Corresponding author. Tel.: +43 15880136060. E-mail addresses: [email protected] (J. Ghosh), [email protected]. at (T. Windbacher), [email protected] (V. Sverdlov), [email protected]. ac.at (S. Selberherr). Joydeep Ghosh ⇑, Thomas Windbacher, Viktor Sverdlov, Siegfried Selber...

Theory of space‐charge polarization and electrode‐discharge effects

Electrode independent chemoresistive response for cobalt phthalocyanine in the space charge limited conductivity regime.

The electrical properties of 50 nm thick metallophthalocyanine films, prepared by organic molecular beam epitaxy (OMBE) on interdigitated electrodes, were studied with DC current-voltage measurements and impedance spectroscopy. The transition from Ohmic behavior at low voltages to space-charge-limited conductivity (SCLC) at higher voltages depends on the metal electrode (Pt, Pd, and Au), but do...