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