Controlling hierarchy in solution-processed polymer solar cells based on crosslinked P3HT

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dc.contributor.authorTao, Cen_AU
dc.contributor.authorAljada, Men_AU
dc.contributor.authorShaw, PEen_AU
dc.contributor.authorLee, KHen_AU
dc.contributor.authorCavaye, Hen_AU
dc.contributor.authorBalfour, MNen_AU
dc.contributor.authorBorthwick, RJen_AU
dc.contributor.authorJames, Men_AU
dc.contributor.authorBurn, PLen_AU
dc.contributor.authorGentle, IRen_AU
dc.contributor.authorMeredith, Pen_AU
dc.date.accessioned2013-03-07T04:58:08Zen_AU
dc.date.available2013-03-07T04:58:08Zen_AU
dc.date.issued2013-01-01en_AU
dc.date.statistics2013-03-07en_AU
dc.description.abstractUnderstanding and controlling the morphology of donor/acceptor blends is critical for the development of solution processable organic solar cells. By crosslinking a poly(3-n-hexylthiophene-2,5-diyl) (P3HT) film we have been able to spin-coat [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) onto the film to form a structure that is close to a bilayer, thus creating an ideal platform for investigating interdiffusion in this model system. Neutron reflectometry (NR) demonstrates that without any thermal treatment a smaller amount of PCBM percolates throughout the crosslinked P3HT when compared to a non-crosslinked P3HT film. Using time-resolved NR we also show thermal annealing increases the rate of diffusion, resulting in a near-uniform distribution of PCBM throughout the polymer film. XPS measurements confirm the presence of both P3HT and PCBM at the annealed film's surface indicating that the two components are intermixed. Photovoltaic devices fabricated using this bilayer approach and suitable annealing conditions yielded comparable power conversion efficiencies to bulk heterojunction devices made from the same materials. The crosslinking procedure has also enabled the formation of patterned P3HT films by photolithography. Pillars with feature sizes down to 2 μm were produced and after subsequent deposition of PCBM and thermal annealing devices with efficiencies of up to 1.4% were produced.© 2013, Wiley-VCH Verlag GmbH & Co. KGaAen_AU
dc.identifier.citationTao, C., Aljada, M., Shaw, P. E., Lee, K. H., Cavaye, H., Balfour, M. N., Borthwick, R. J., James, M., Burm, P. L., Gentle, I. R., & Meredith, P. (2013). Controlling hierarchy in solution-processed polymer solar cells based on crosslinked P3HT. Advanced Energy Materials, 3 (1), 105-112. doi:10.1002/aenm.201200394en_AU
dc.identifier.govdoc4908en_AU
dc.identifier.issn1614-6832en_AU
dc.identifier.issue1en_AU
dc.identifier.journaltitleAdvanced Energy Materialsen_AU
dc.identifier.pagination105-112en_AU
dc.identifier.urihttp://dx.doi.org/10.1002/aenm.201200394en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/4496en_AU
dc.identifier.volume3en_AU
dc.language.isoenen_AU
dc.publisherWiley-VCH Verlag GmbH & Co. KGaAen_AU
dc.subjectCross-linkingen_AU
dc.subjectPhotovoltaic cellsen_AU
dc.subjectPerformanceen_AU
dc.subjectMorphologyen_AU
dc.subjectNeutron reflectorsen_AU
dc.subjectSolar cellsen_AU
dc.titleControlling hierarchy in solution-processed polymer solar cells based on crosslinked P3HTen_AU
dc.typeJournal Articleen_AU
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