Effect of a calcium cathode on water-based nanoparticulate solar cells

Ben Vaughan, Andrew Stapleton, Bofei Xue, Elisa Sesa, Xiaojing Zhou, Glenn Bryant, Warwick Belcher, Paul Dastoor

    Research output: Contribution to journalArticlepeer-review

    13 Citations (Scopus)


    Water-based nanoparticulate (NP) and bulk heterojunction (BHJ) organic photovoltaic (OPV) devices based on blends of poly(9,9-dioctylfluorene-co-N,N- bis(4-butylphenyl)-N,Ndiphenyl-1,4-phenylenediamine) (PFB) and poly(9,9-dioctylfluorene-co-benzothiadiazole (F8BT) have been fabricated with aluminium and calcium/aluminium cathodes. The NP devices exhibit power conversion efficiencies (PCEs) that are double that of the corresponding BHJ device. Moreover, the addition of calcium into the cathode structure results in a dramatic increase in open circuit voltage and PCEs approaching 1 for water-based polyfluorene OPV devices.

    Original languageEnglish
    Article number053901
    Pages (from-to)053901
    Number of pages4
    JournalApplied Physics Letters
    Issue number5
    Publication statusPublished - 30 Jul 2012


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