Transition fields in organic materials: from percolation to inverted Marcus regime. A consistent Monte Carlo simulation in disordered PPV.

摘要: In this article, we analyze the electric field dependence of hole mobility in disordered poly(p-phenylene vinylene). The charge carrier is obtained from Monte Carlo simulations. Depending on strength three regions can be identified: percolation region, correlation and inverted region. Each region characterized by a different conduction mechanism thus functional field. Earlier studies have highlighted that Poole-Frenkel law, which appears based type caused randomly distributed dipoles. This behavior observed limited range strengths, studying broader fields, more fundamental understanding transport obtained. We identify fields determining transitions between mechanisms material explain their physical origin. principle, allows us to characterize for any organic material. Additionally, study trapping due diagonal off-diagonal disorder, respectively.