4.8 Article

Surface Potential Mapping of SAM-Functionalized Organic Semiconductors by Kelvin Probe Force Microscopy

Journal

ADVANCED MATERIALS
Volume 23, Issue 4, Pages 502-+

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201003122

Keywords

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Funding

  1. National Science Foundation [DMR-0819885, DMR-0706011]
  2. [NSF-ECCS-0822036]
  3. Directorate For Engineering
  4. Div Of Electrical, Commun & Cyber Sys [0822036] Funding Source: National Science Foundation
  5. Division Of Materials Research
  6. Direct For Mathematical & Physical Scien [0706011] Funding Source: National Science Foundation

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Kelvin probe force microscopy measurements on rubrene single crystals partially coated with fluorinated and non-fluorinated SAM derivatives are employed to determine the SAM-induced surface potentials caused by an interfacial charge-transfer doping process resulting in an interface dipole. The surface potential and topographic information in turn allow calculation of the effective intramolecular electric fields and carrier densities due to doping in the SAM-modified rubrene crystals.

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