Phys. Rev. B 75, 113203 (2007) [4 pages]Electric-field-dependent percolation model of charge-carrier mobility in amorphousorganic semiconductorsReceived 7 December 2006; revised 27 January 2007; published 19 March 2007 Understanding the electric field dependence of charge-carrier mobility is central to the rational design of organic semiconductor devices. We present an analytic description of mobility by considering nonequilibrium carrier distributions within a percolation framework. The theory is compared to measurements by Brütting et al. Org. Electron. 2 1 (2001) of the current-voltage and mobility of the archetype small molecule tris(8-hydroxyquinoline) aluminum. The theory accurately reproduces the temperature, carrier density, and electric field dependences of the experimental data. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.75.113203
DOI:
10.1103/PhysRevB.75.113203
PACS:
73.61.Ph, 72.80.Le
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