Single-particle spectroscopy on conducting polymer-fullerene composite materials for application in organic photovoltaic devices

    Authors

    A. J. Gesquiere; D. Tenery;Z. J. Hu

    Comments

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    Abbreviated Journal Title

    Spectroscopy

    Keywords

    LIGHT-EMITTING-DIODES; PLASTIC SOLAR-CELLS; CONJUGATED POLYMERS; MOLECULE SPECTROSCOPY; CHARGE-CARRIERS; TEMPERATURE; NANOPARTICLES; PERFORMANCE; MORPHOLOGY; PHOTOPHYSICS; Spectroscopy

    Abstract

    The study of the photophysical and optoelectronic properties of a functioning conducting pol ymer device is extremely complicated and is hampered by the complex nanostucture and overall morphology of the conducting polymer materials applied in these devices. Here we discuss a novel approach to investigate this issue spectroscopically in terms of bulk-heterojunction organic photovoltaic devices. Novel composite nanoparticles of the conjugated polymers MEH-PPV and MY Wended with the fullerene PCBM were fabricated and are observed to be excellent simplified model systems for the study of molecular-scale morphology effects at play in these complex nanostructured materials. Single-particle spectroscopy reveals the extent to which variations in polymer-chain folding and interactions between polymer chains and fullerenes affect material mo rphology, spectral properties, and optoelectronic properties, providing a detailed molecular scale insight into the morphological effects at play in the active layers of bulk-heterojunction organic photovoltaic devices that otherwise would be masked by the presence of the bulk.

    Journal Title

    Spectroscopy

    Volume

    23

    Issue/Number

    4

    Publication Date

    1-1-2008

    Document Type

    Article

    Language

    English

    First Page

    32

    Last Page

    44

    WOS Identifier

    WOS:000254887000006

    ISSN

    0887-6703

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