TRANSITION METAL COMPLEXES AS POTENTIAL SEMICONDUCTORS.
Abstract
Electron transfer reaction mechanisms were studied through the measurement of the electrical properties of the coordination complex tris-(o-phenanthroline) iron (II)-hexachloroiridate and its analogs, as well as the organic ligands dipyridyl and orthophenanthroline. The plots of log C vs. 1/T for these complexes have a break in the curve, indicating the presence of both intrinsic and extrinsic conduction paths where C is the conductivity. The unusually high value for C at infinite temperature is shown to be consistent with a quantum mechanical tunneling model based on the formation of charge carriers and ion pairs from the neutral species constituting the microcrystallites. A current can be maintained when, under the influence of an electric field, the charge carriers undergo tunneling through a potential barrier formed at the edges of the microcrystallites. It is shown that a relationship between the mechanism for the conduction of these complexes and that for the organic ligands should exist.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 31, 1965
- Accession Number
- AD0627705
Entities
People
- A. M. Zwickel
- S. C. Kwan
Organizations
- Clark University