Journal article
Work Function Modification via Combined Charge-Based Through-Space Interaction and Surface Interaction
Advanced materials interfaces, v 5(15), 1800471
09 Aug 2018
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Work function modification of electrodes is an important factor to achieve high performance in organic electronics. However, a clear explanation of the origin of work function modification has remained elusive. Here, it is investigated how the work function of electrodes is affected by the charge-based through-space interaction with the well-known surface interaction. The studies reveal that the formation of a surface dipole leads to a work function shift, even when the work function modifying layer and substrate are separated. A work function shift is also demonstrated by electrophoretic deposition of ionic polyelectrolytes while the same polyelectrolytes do not cause any work function shift when they are spin cast. More noteworthy is that a neutral (nonionic) polymer which has no specific surface-interacting functional groups can induce work function shift of its substrate by a charge-based through-space interaction when deposited by electrospraying. These results provide a more comprehensive understanding of work function modification and motivate the design and selection of a wide range of effective work function modifying layers for organic electronics.
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Details
- Title
- Work Function Modification via Combined Charge-Based Through-Space Interaction and Surface Interaction
- Creators
- Da Seul Yang - University of MichiganDavid Bilby - University of MichiganKyeongwoon Chung - Korea Institute of Materials ScienceJill K. Wenderott - University of MichiganJacob Jordahl - University of MichiganBo Hyun Kim - Korea Inst Ind Technol, Cheonan 31056, South KoreaJoerg Lahann - BioSurfacesPeter F. Green - National Renewable Energy LaboratoryJinsang Kim - BioSurfaces
- Publication Details
- Advanced materials interfaces, v 5(15), 1800471
- Publisher
- Wiley
- Number of pages
- 6
- Grant note
- DE-SC-0000957 / Center for Solar and Thermal Energy Conversion, an Energy Frontier Research Center - U.S. Department of Energy, Office of Science, Basic Energy Sciences; United States Department of Energy (DOE) NPRP8-245-1-059 / Qatar National Research Fund; Qatar National Research Fund (QNRF)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000441125500022
- Scopus ID
- 2-s2.0-85051187562
- Other Identifier
- 991022132153104721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Multidisciplinary
- Materials Science, Multidisciplinary