Experimental demonstration of photon upconversion via cooperative energy pooling

Daniel H. Weingarten, Michael D. Lacount, Jao Van De Lagemaat, Garry Rumbles, Mark T. Lusk, Sean E. Shaheen

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Photon upconversion is a fundamental interaction of light and matter that has applications in fields ranging from bioimaging to microfabrication. However, all photon upconversion methods demonstrated thus far involve challenging aspects, including requirements of high excitation intensities, degradation in ambient air, requirements of exotic materials or phases, or involvement of inherent energy loss processes. Here we experimentally demonstrate a mechanism of photon upconversion in a thin film, binary mixture of organic chromophores that provides a pathway to overcoming the aforementioned disadvantages. This singlet-based process, called Cooperative Energy Pooling (CEP), utilizes a sensitizer-acceptor design in which multiple photoexcited sensitizers resonantly and simultaneously transfer their energies to a higher-energy state on a single acceptor. Data from this proof-of-concept implementation is fit by a proposed model of the CEP process. Design guidelines are presented to facilitate further research and development of more optimized CEP systems.

Original languageEnglish
Article number14808
JournalNature communications
Volume8
DOIs
Publication statusPublished - Mar 15 2017

ASJC Scopus subject areas

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)

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    Weingarten, D. H., Lacount, M. D., Van De Lagemaat, J., Rumbles, G., Lusk, M. T., & Shaheen, S. E. (2017). Experimental demonstration of photon upconversion via cooperative energy pooling. Nature communications, 8, [14808]. https://doi.org/10.1038/ncomms14808