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Nanocomposite of nickel oxide nanoparticles and polyethylene oxide as printable hole transport layer for organic solar cells

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Abstract

We focused on the low-temperature fabrication (∼100 °C) of nanoparticle-based NiOx hole transport layers for organic solar cells. We used high molecular weight polyethylene oxide (PEO) as a sacrificial additive for the processing of NiOx nanoparticle (NP) dispersions which is removed from the film by oxygen plasma prior to the active layer deposition. Through comprehensive characterization by optical, electrical and scanning probe techniques we show that an optimal NiOx : PEO ratio allows to disperse the NPs, hindering their aggregation and maximizing device performance. Finally, we demonstrate the practical relevance of our approach by inkjet printing the NiOx:PEO blends to produce hole transport layers (HTLs) for P3HT:PCBM bulk heterojunction solar cells with comparable efficiencies to devices produced with high-temperature precursor-based approaches. The utilization of P3HT:PCBM as active layer material is meant to offer an optimum standard for the introduction of the presented HTL processing approach and its applicability to a wider range of hybrid systems and multilayer optoelectronic devices.

Graphical abstract: Nanocomposite of nickel oxide nanoparticles and polyethylene oxide as printable hole transport layer for organic solar cells

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Publication details

The article was received on 03 Apr 2019, accepted on 08 Apr 2019 and first published on 08 Apr 2019


Article type: Paper
DOI: 10.1039/C9SE00216B
Citation: Sustainable Energy Fuels, 2019, Advance Article
  • Open access: Creative Commons BY license
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    Nanocomposite of nickel oxide nanoparticles and polyethylene oxide as printable hole transport layer for organic solar cells

    M. Ruscello, T. Sarkar, A. Levitsky, G. M. Matrone, N. Droseros, S. Schlisske, E. Sachs, P. Reiser, E. Mankel, W. Kowalsky, N. Banerji, N. Stingelin, G. L. Frey and G. Hernandez-Sosa, Sustainable Energy Fuels, 2019, Advance Article , DOI: 10.1039/C9SE00216B

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