Lifetimes of organic photovoltaics: photooxidative degradation of a model compound

K. Norrman, J. Alstrup, M. Jørgensen, Frederik C Krebs

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    A poly phenylene vinylene (PPV-type) oligomer used in organic photovoltaics was designed to facilitate the interpretation of mass spectral data. A film of the oligomer was subjected to various degrees of illumination (1000 W m(-2), AM1.5) in air resulting in photooxidation of the material. The surface chemistry was monitored by TOF-SIMS and XPS. The experiment described accelerated photooxidation without any contributions from interface processes. The photooxidative degradation mechanisms are described starting from the intact molecule through presumably, intermediate photooxidation products to small photooxidation products. The processes are described with various degrees of specificity and with varying degrees of detail. Copyright (C) 2006 John Wiley & Sons, Ltd.
    Original languageEnglish
    JournalSurface and Interface Analysis
    Volume38
    Issue number9
    Pages (from-to)1302-1310
    ISSN0142-2421
    DOIs
    Publication statusPublished - 2006

    Cite this