Toward a Unified Treatment of Electronic Processes in Organic Semiconductors

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A quantitative study of n-type doping in highly crystalline organic semiconductor films establishes the predominant influence of electrostatic forces in these low-dielectric materials. Based on these findings, a self-consistent model of doped (purposely or not) organic semiconductors is proposed in which: (1) the equilibrium free carrier density, nf, is a small fraction of the total charge density; (2) a superlinear increase in conductivity with doping density is universal; (3) nf increases with applied electric field; and (4) the carrier mobility is field-dependent regardless of crystallinity.

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5 p.

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B.A., Gregg. January 1, 2005.

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Description

A quantitative study of n-type doping in highly crystalline organic semiconductor films establishes the predominant influence of electrostatic forces in these low-dielectric materials. Based on these findings, a self-consistent model of doped (purposely or not) organic semiconductors is proposed in which: (1) the equilibrium free carrier density, nf, is a small fraction of the total charge density; (2) a superlinear increase in conductivity with doping density is universal; (3) nf increases with applied electric field; and (4) the carrier mobility is field-dependent regardless of crystallinity.

Physical Description

5 p.

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  • Related Information: Presented at the 2004 DOE Solar Energy Technologies Program Review Meeting, 25-28 October 2004, Denver, Colorado. Also included in the proceedings available on CD-ROM (DOE/GO-102005-2067; NREL/CD-520-37140)

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  • Report No.: NREL/CP-590-37617
  • Grant Number: AC36-99-GO10337
  • Office of Scientific & Technical Information Report Number: 860990
  • Archival Resource Key: ark:/67531/metadc781879

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  • January 1, 2005

Added to The UNT Digital Library

  • Dec. 3, 2015, 9:30 a.m.

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  • April 6, 2017, 12:41 p.m.

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B.A., Gregg. Toward a Unified Treatment of Electronic Processes in Organic Semiconductors, article, January 1, 2005; Golden, Colorado. (digital.library.unt.edu/ark:/67531/metadc781879/: accessed October 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.