{ "id": "cond-mat/0109432", "version": "v2", "published": "2001-09-24T12:09:14.000Z", "updated": "2004-02-03T10:06:38.000Z", "title": "Generalized Einstein relation for disordered semiconductors - implications for device performance", "authors": [ "Yohai Roichman", "Nir Tessler" ], "journal": "Applied Physics Letters (80) 11, 1948 (2002)", "doi": "10.1063/1.1461419", "categories": [ "cond-mat.stat-mech" ], "abstract": "The ratio between mobility and diffusion parameters is derived for a Gaussian-like density of states. This steady-state analysis is expected to be applicable to a wide range of organic materials (polymers or small molecules) as it relies on the existence of quasi-equilibrium only. Our analysis shows that there is an inherent dependence of the transport in trap-free disordered organic-materials on the charge density. The implications for the contact phenomena and exciton generation rate in light emitting diodes as well as channel-width in field-effect transistors is discussed.", "revisions": [ { "version": "v2", "updated": "2004-02-03T10:06:38.000Z" } ], "analyses": { "keywords": [ "generalized einstein relation", "device performance", "disordered semiconductors", "implications", "exciton generation rate" ], "tags": [ "journal article" ], "publication": { "publisher": "AIP", "journal": "Appl. Phys. Lett." }, "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }