Journal article
Nano-pathways: Bridging the divide between water-processable nanoparticulate and bulk heterojunction organic photovoltaics
Nano Energy, Vol.19, pp.495-510
2016
Abstract
Here we report the application of a conjugated copolymer based on thiophene and quinoxaline units, namely poly[2,3-bis-(3-octyloxyphenyl)quinoxaline-5,8-diyl-alt-thiophene-2,5-diyl] (TQ1), to nanoparticle organic photovoltaics (NP-OPVs). TQ1 exhibits more desirable material properties for NP-OPV fabrication and operation, particularly a high glass transition temperature (Tg) and amorphous nature, compared to the commonly applied semicrystalline polymer poly(3-hexylthiophene) (P3HT). This study reports the optimisation of TQ1:PC71BM (phenyl C71 butyric acid methyl ester) NP-OPV device performance by the application of mild thermal annealing treatments in the range of the Tg (sub-Tg and post-Tg), both in the active layer drying stage and post-cathode deposition annealing stage of device fabrication, and an in-depth study of the effect of these treatments on nanoparticle film morphology. In addition, we report a type of morphological evolution in nanoparticle films for OPV active layers that has not previously been observed, that of PC71BM nano-pathway formation between dispersed PC71BM-rich nanoparticle cores, which have the benefit of making the bulk film more conducive to charge percolation and extraction.
Details
- Title
- Nano-pathways: Bridging the divide between water-processable nanoparticulate and bulk heterojunction organic photovoltaics
- Authors/Creators
- N.P. Holmes (Author/Creator) - University of Newcastle AustraliaM. Marks (Author/Creator) - University of Newcastle AustraliaP. Kumar (Author/Creator) - Council of Scientific and Industrial ResearchR. Kroon (Author/Creator) - University of South AustraliaM.G. Barr (Author/Creator) - University of Newcastle AustraliaN. Nicolaidis (Author/Creator) - University of Newcastle AustraliaK. Feron (Author/Creator) - University of Newcastle AustraliaA. Pivrikas (Author/Creator) - The University of QueenslandA. Fahy (Author/Creator) - University of Newcastle AustraliaA.D.de.Z. Mendaza (Author/Creator)A.L.D. Kilcoyne (Author/Creator) - Lawrence Berkeley National LaboratoryC. Müller (Author/Creator) - Chalmers University of TechnologyX. Zhou (Author/Creator) - University of Newcastle AustraliaM.R. Andersson (Author/Creator) - Chalmers University of TechnologyP.C. Dastoor (Author/Creator) - University of Newcastle AustraliaW.J. Belcher (Author/Creator) - University of Newcastle Australia
- Publication Details
- Nano Energy, Vol.19, pp.495-510
- Publisher
- Elsevier Ltd
- Identifiers
- 991005543480207891
- Copyright
- © 2015 Elsevier Ltd.
- Murdoch Affiliation
- School of Engineering and Information Technology
- Language
- English
- Resource Type
- Journal article
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