Finite-size scaling of charge carrier mobility in disordered organic semiconductors

Article

关键词: MONTE-CARLO SIMULATIONS;    LIGHT-EMITTING-DIODES;    HOLE MOBILITY;    POLY(P-PHENYLENE VINYLENE);    DENSITY-DEPENDENCE;    THIN-FILMS;    TRANSPORT;    ELECTRON;    TIME;    RECOMBINATION;   

DOI  :  10.1103/PhysRevB.94.014208

来源: SCIE

【 摘 要 】

Simulations of charge transport in amorphous semiconductors are often performed in microscopically sized systems. As a result, charge carrier mobilities become system-size dependent. We propose a simple method for extrapolating a macroscopic, nondispersive mobility from the system-size dependence of a microscopic one. The method is validated against a temperature-based extrapolation [A. Lukyanov and D. Andrienko, Phys. Rev. B 82, 193202 (2010)]. In addition, we provide an analytic estimate of system sizes required to perform nondispersive charge transport simulations in systems with finite charge carrier density, derived from a truncated Gaussian distribution. This estimate is not limited to lattice models or specific rate expressions.

【 授权许可】

Free