skip to main content

Title: Numerical modeling of the polarization current of geminate pairs in disordered polymers with traps

The time dependences of the polarization current of geminate pairs in disordered media are simulated by the Monte Carlo numerical method. A model of hopping transport with exponential energy distribution of the hopping centers is considered. The dependence of the polarization-current kinetics on the initial geminate-pair separation, the relative concentration of traps, the temperature, and the strength of the applied electric field is investigated. The limits of the applicability of an analytical theory based on the driftdiffusion description of electron and hole motion of the geminate pair in the dispersive-transport mode are discussed. The range of parameters is determined in which the existence of the negative current is possible.
Authors:
;  [1] ;  [2]
  1. National Research Nuclear University 'MEPhI' (Russian Federation)
  2. Moscow State Institute of Electronics and Mathematics of the National Research University 'Higher School of Economics' (Russian Federation)
Publication Date:
OSTI Identifier:
22210499
Resource Type:
Journal Article
Resource Relation:
Journal Name: Semiconductors; Journal Volume: 47; Journal Issue: 10; Other Information: Copyright (c) 2013 Pleiades Publishing, Ltd.; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CURRENTS; ELECTRIC FIELDS; ENERGY SPECTRA; MONTE CARLO METHOD; POLARIZATION; POLYMERS; SIMULATION; TIME DEPENDENCE