Modeling of spin injection and spin transport properties in organic and inorganic semiconductors

P. P. Ruden, J. D. Albrecht, D. L. Smith

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Spin polarized charge carrier injection and transport in non-magnetic semiconductors is a key enabling mechanism for spin based electronic data processing. We present theoretical models to describe spin injection and spin transport in structures consisting of a ferromagnetic metal injector, a thin semiconductor layer, and a ferromagnetic metal collector. The semiconductors considered are conjugated polymers (e.g. PPV), small-molecule organic molecular crystals (e.g. pentacene), and inorganic semiconductors (e.g. silicon). In thermal equilibrium the charge carriers in these semiconductors are not spin polarized. Efficient spin injection requires that the semiconductor be driven far out of local thermal equilibrium. Since carrier mobilities (and other relevant parameters) in polymers, organic molecular crystals, and inorganic semiconductors differ by many orders of magnitude, their charge carrier injection characteristics differ significantly.

Original languageEnglish (US)
Title of host publicationOrganic Thin-Film Electronics
PublisherMaterials Research Society
Number of pages6
ISBN (Print)155899825X, 9781558998254
StatePublished - 2005
Event2005 MRS Spring Meeting - San Francisco, CA, United States
Duration: Mar 28 2005Apr 1 2005

Publication series

NameMaterials Research Society Symposium Proceedings
ISSN (Print)0272-9172


Other2005 MRS Spring Meeting
Country/TerritoryUnited States
CitySan Francisco, CA


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