High-performance inverted solar cells with a controlled ZnO buffer layer

    Research output: Contribution to journalArticle

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    Abstract

    ZnO is a versatile cathode buffer layer for organic photovoltaics (OPV) due to its appealing optical and electronic properties. Using the sol-gel method, we find that the processing temperature of ZnO cathode buffer layers significantly influences the device performance of inverted polymer OPVs composed of blended films of poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl-C61-butyric acid methyl ester (PCBM). In particular, ZnO processed at relatively low temperatures results in better device performance than those processed at higher temperatures despite the improved crystallinity and electron mobility of the latter. We attribute this finding to the tuning of the ZnO work function with the annealing temperature, which determines the interface energetics at the cathode and thus influences the open circuit voltage, series resistance and fill factor.

    Original languageEnglish (US)
    Pages (from-to)3604-3610
    Number of pages7
    JournalRSC Advances
    Volume4
    Issue number7
    DOIs
    StatePublished - 2014

    Profile

    Acetanilides
    Temperature
    Coumestrol
    Cleidocranial Dysplasia
    Buffer layers
    Cathodes
    Halobacteriaceae
    Accessory Nerve
    Acacia
    Optic Atrophy
    Desiccation
    Arthroscopy
    Contracture
    Electronic properties
    Solar cells
    Tuning
    Annealing
    Butyric acid
    Electron mobility
    Open circuit voltage

    ASJC Scopus subject areas

    • Chemical Engineering(all)
    • Chemistry(all)

    Cite this

    High-performance inverted solar cells with a controlled ZnO buffer layer. / Jiang, C.; Lunt, R. R.; Duxbury, P. M.; Zhang, P. P.

    In: RSC Advances, Vol. 4, No. 7, 2014, p. 3604-3610.

    Research output: Contribution to journalArticle

    Jiang, C.; Lunt, R. R.; Duxbury, P. M.; Zhang, P. P. / High-performance inverted solar cells with a controlled ZnO buffer layer.

    In: RSC Advances, Vol. 4, No. 7, 2014, p. 3604-3610.

    Research output: Contribution to journalArticle

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