Theoretical derivation of the isothermal transient ionic current in an ion conductor: Migration, diffusion, and space-charge effects
2001 (English)In: Journal of Applied Physics, ISSN 0021-8979, E-ISSN 1089-7550, Vol. 90, no 11, 5570-5575 p.Article in journal (Refereed) Published
The Green’s function technique was used to determine the isothermal transient ionic current (ITIC) caused by the application of a constant potential across an ion conductor which initially contained the ions under consideration. The analysis included migration, diffusion, and space-charge effects as contributions to the ionic motion. Furthermore, the relative importance of diffusion and space-charge effects as currentlimiters was investigated. It was found that ion concentrations as low as ∼1016–1017 cm−3 are sufficient to make space-charge effects the dominant contribution to the decay of the ITIC at low applied electric fields(∼104 V/cm). Hence such effects should be taken into consideration when the ITIC method is used to determine conduction parameters.
Place, publisher, year, edition, pages
2001. Vol. 90, no 11, 5570-5575 p.
Engineering and Technology
IdentifiersURN: urn:nbn:se:uu:diva-89906DOI: 10.1063/1.1412585OAI: oai:DiVA.org:uu-89906DiVA: diva2:161756