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

Journal Article · Tue Oct 15 00:00:00 EDT 2013 · Semiconductors

DOI:https://doi.org/10.1134/S1063782613100163· OSTI ID:22210499

Korolev, N. A.; Tyutnev, A. P. ^[1]

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1. Moscow State Institute of Electronics and Mathematics of the National Research University 'Higher School of Economics' (Russian Federation)

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.

• OSTI ID: 22210499
• Journal Information: Semiconductors, Vol. 47, Issue 10; Other Information: Copyright (c) 2013 Pleiades Publishing, Ltd.; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7826
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CURRENTS
ELECTRIC FIELDS
ENERGY SPECTRA
MONTE CARLO METHOD
POLARIZATION
POLYMERS
SIMULATION
TIME DEPENDENCE