Chemical potential in disordered organic materials
arXiv:1206.4890 · doi:10.1088/0022-3727/46/12/125106
Abstract
Charge carrier mobility in disordered organic materials is being actively studied, motivated by several applications such as organic light emitting diodes and organic field-effect transistors. It is known that the mobility in disordered organic materials depends on the chemical potential which in turn depends on the carrier concentration. However, the functional dependence of chemical potential on the carrier concentration is not known. In this study, we focus on the chemical potential in organic materials with Gaussian disorder. We identify three cases of non-degenerate, degenerate and saturated regimes. In each regime we calculate analytically the chemical potential as a function of the carrier concentration and the energetic disorder from the first principles.
5 pages, 3 figures
References in corpus (4)
- Generalized Einstein relation for disordered semiconductors - implications for device performance
- Spectral, optical and transport properties of the adiabatic anisotropic Holstein model: Application to slightly doped organic semiconductors
- Electronic transport within a quasi two-dimensional model for rubrene single-crystal field effect transistors
- How the DNA sequence affects the Hill curve of transcriptional response