Unraveling the mechanism of molecular doping in organic semiconductors

Alexander Mityashin; Yoann Olivier; Tanguy Van Regemorter; Cedric Rolin; Stijn Verlaak; Nicolas G Martinelli; David Beljonne; Jérôme Cornil; Jan Genoe; Paul Heremans

doi:10.1002/adma.201104269

Unraveling the mechanism of molecular doping in organic semiconductors

Adv Mater. 2012 Mar 22;24(12):1535-9. doi: 10.1002/adma.201104269. Epub 2012 Feb 23.

Authors

Alexander Mityashin¹, Yoann Olivier, Tanguy Van Regemorter, Cedric Rolin, Stijn Verlaak, Nicolas G Martinelli, David Beljonne, Jérôme Cornil, Jan Genoe, Paul Heremans

Affiliation

¹ Imec, Kapeldreef 75, Leuven, Belgium. [email protected]

PMID: 22362580
DOI: 10.1002/adma.201104269

Abstract

The mechanism by which molecular dopants donate free charge carriers to the host organic semiconductor is investigated and is found to be quite different from the one in inorganic semiconductors. In organics, a strong correlation between the doping concentration and its charge donation efficiency is demonstrated. Moreover, there is a threshold doping level below which doping simply has no electrical effect.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Electrons
Naphthacenes / chemistry*
Nitriles / chemistry*
Semiconductors*

Substances

Naphthacenes
Nitriles
tetracyanoquinodimethane
pentacene