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Issue 3, 2015
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Highly efficient photochemical upconversion in a quasi-solid organogel

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Abstract

Despite the promise of photochemical upconversion as a means to extend the light-harvesting capabilities of a range of photovoltaic solar energy conversion devices, it remains a challenge to create efficient, solid-state upconverting materials. Until now, a material has yet to be found which is as efficient as a liquid composition. Here, a gelated photochemical upconversion material is reported with a performance indistinguishable from an otherwise identical liquid composition. The sensitizer phosphorescence lifetime, Stern–Volmer quenching constants and upconversion performance (6% under one-sun illumination) were all found to be unchanged in a quasi-solid gelated sample when compared to the liquid sample. The result paves the way to a new family of efficient photochemical upconversion materials comprised of macroscopically solid, but microscopically liquid gel, for application in photovoltaics and photocatalytic water-splitting.

Graphical abstract: Highly efficient photochemical upconversion in a quasi-solid organogel

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Publication details

The article was received on 12 Nov 2014, accepted on 20 Nov 2014 and first published on 20 Nov 2014


Article type: Paper
DOI: 10.1039/C4TC02584A
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J. Mater. Chem. C, 2015,3, 616-622

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    Highly efficient photochemical upconversion in a quasi-solid organogel

    K. Sripathy, R. W. MacQueen, J. R. Peterson, Y. Y. Cheng, M. Dvořák, D. R. McCamey, N. D. Treat, N. Stingelin and T. W. Schmidt, J. Mater. Chem. C, 2015, 3, 616
    DOI: 10.1039/C4TC02584A

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