Abstract
Charge carrier mobility in disordered organic materials is a key parameter governing the performance of organic electronic devices. It is well established that the field dependence of mobility follows a universal form μ ∼ exp(√F), which can be adequately explained within the framework of the correlated disorder model. In this work, we perform a comparative analysis of several microscopic correlation models, including the dipole glass (DG), quadrupole glass (QG), Gartstein–Conwell (GC), and induced dipole (ID) models. The main objective is to validate an analytical mobility expression based on the modified effective temperature concept for different types of energetic correlation. The proposed model introduces a field- and temperature-dependent effective temperature and provides mobility estimates that are in excellent agreement with Monte Carlo simulations and experimental data for both polar (DEASP, DEH) and nonpolar (TPD, TASB) materials across a wide range of electric fields and temperatures. A particularly important finding is that correlation functions with similar spatial decay profiles, irrespective of their specific physical nature, lead to virtually identical field-dependent mobility. This indicates that the functional shape of the correlation function, rather than the underlying microscopic mechanism, plays the dominant role in determining charge transport behavior. The developed model represents a simple and versatile analytical tool for mobility evaluation, suitable for practical application in the design and optimization of organic semiconductor devices.