• A
  • A
  • A
  • ABC
  • ABC
  • ABC
  • А
  • А
  • А
  • А
  • А
Regular version of the site

Article

Time of flight transients in the dipolar glass model

Chemical Physics. 2012. No. 403. P. 68-73.
Novikov S. V., Tyutnev A., Schein L. B.
Using Monte Carlo simulation we investigated time of flight current transients predicted by the dipolar glass model for a random spatial distribution of hopping centers. Behavior of the carrier drift mobility was studied at room temperature over a broad range of electric field and sample thickness. A flat plateau followed by current decay is the most common feature of the simulated transients. Poole–Frenkel mobility field dependence was confirmed over 5–200 V/lm as well as its independence of the sample thickness. Universality of transients with respect to both field and sample thickness has been observed. A simple phenomenological model to describe simulated current transients has been proposed. Simulation results agree well with the reported Poole–Frenkel slope and shape of the transients for a prototype molecularly doped polymer.