Title :
Equilibrium carrier transport in diluted hopping systems
Author :
Arkhipov, V.I. ; Bässler, H.
Author_Institution :
Fachbereich Phys. Chem., Philipps-Univ., Marburg, Germany
Abstract :
The authors consider the concentration dependence of the equilibrium carrier mobility and diffusivity at weak electric fields and show that carrier jumps to nearest hopping neighbors represent the dominant mode of hopping transport only for diluted systems with sufficiently low concentration of hopping sites. For high concentration of hopping states carrier jumps to states that are not nearest neighbors give a significant contribution to transport characteristics providing concentration-independent values for activation energies of the equilibrium carrier mobility and diffusivity
Keywords :
carrier lifetime; carrier mobility; hopping conduction; localised states; activation energies; carrier jumps; concentration dependence; concentration-independent values; diffusivity; diluted hopping systems; diluted systems; equilibrium carrier mobility; equilibrium carrier transport; high concentration hopping states; hopping transport; low concentration hopping sites; nearest hopping neighbors; weak electric fields; Distribution functions; Nearest neighbor searches; Probability; Temperature;
Conference_Titel :
Conduction and Breakdown in Solid Dielectrics, 1995. ICSD'95., Proceedings of the 1995 IEEE 5th International Conference on
Conference_Location :
Leicester
Print_ISBN :
0-7803-2040-9
DOI :
10.1109/ICSD.1995.522961
