Probing the electrode-polymer interface in conjugated polymer devices with surface-enhanced Raman scattering

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Publication Type Journal Article
School or College College of Science
Department Physics
Creator Lupton, John Mark
Other Author Li, Dongbo; Borys, Nicholas J.
Title Probing the electrode-polymer interface in conjugated polymer devices with surface-enhanced Raman scattering
Date 2012-01-01
Description A crucial consideration in organic devices is the role of the interface between a metal electrode and the active polymer material. Here, we use the conjugated polymer poly[2-methoxy-5-(2-ethylhexyl-oxy)-1,4-phenylene-vinylene] (MEH-PPV) with model gold and silver electrodes to perform surface-enhanced Raman scattering (SERS) on the metal-MEH-PPV interface. We observe significant differences between the SERS spectra on the two metals, which we assign to conformational changes of the phenyl rings within the polymer. The difference between gold and silver interfaces can be removed upon thermal annealing, suggesting structural relaxation. Resonance Raman spectra of the two interfaces are identical, implying that the overall conformation of the polymer backbone which supports the pi-electron transition remains unaffected by the different metals. SERS is uniquely sensitive to the interfacial metal/organic layer and provides an important in situ tool to optimizing organic device structures.
Type Text
Publisher American Institute of Physics (AIP)
Volume 100
Issue 14
First Page 141907-1
Last Page 141907-4
DOI http://dx.doi.org/10.1063/1.3701278.
Dissertation Institution University of Utah
Language eng
Bibliographic Citation Li, D., Borys, N. J., & Lupton, J. M. (2012). Probing the electrode-polymer interface in conjugated polymer devices with surface-enhanced Raman scattering. Applied Physics Letters, 100(14), 141907-1-141907-4.
Rights Management (c)American Institute of Physics. The following article appeared in Li, D., Borys, N. J., & Lupton, J. M. Probing the electrode-polymer interface in conjugated polymer devices with surface-enhanced Raman scattering. Applied Physics Letters, 100(14), 2012.
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Reference URL https://collections.lib.utah.edu/ark:/87278/s60580p7
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