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Lindqvist polyoxometalates as electrolytes in p-type dye sensitized solar cells

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Abstract

The development of new redox couples provides a clear strategy to improve power conversion efficiency (PCE) in p-type dye-sensitized solar cells (p-DSSCs) through enabling improvements in open-circuit voltage (VOC). In this work we report the use of molybdenum and tungsten containing Lindqvist polyoxometalates (POMs), [TBA]2Mo6O19 and [TBA]2W6O19, as an alternative to the traditionally used I/I3 redox mediator in p-DSSCs. POM electrolytes are cheap and easy to synthesize, air stable and transparent, making them suitable for tandem solar cell applications. Electrolytes were evaluated using a simple testing device to benchmark the respective devices. Up to a 5-fold increase in VOC was observed for p-DSSCs employing electrolytes with POMs upon comparison with traditionally used I3/I, while short-circuit photocurrents with the same order of magnitude were observed under identical dilute conditions.

Graphical abstract: Lindqvist polyoxometalates as electrolytes in p-type dye sensitized solar cells

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Publication details

The article was received on 11 Oct 2018, accepted on 20 Nov 2018 and first published on 21 Nov 2018


Article type: Communication
DOI: 10.1039/C8SE00495A
Citation: Sustainable Energy Fuels, 2019, Advance Article
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    Lindqvist polyoxometalates as electrolytes in p-type dye sensitized solar cells

    Tijmen M. A. Bakker, S. Mathew and J. N. H. Reek, Sustainable Energy Fuels, 2019, Advance Article , DOI: 10.1039/C8SE00495A

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