Nature Communications (Jul 2021)

Six-photon upconverted excitation energy lock-in for ultraviolet-C enhancement

  • Qianqian Su,
  • Han-Lin Wei,
  • Yachong Liu,
  • Chaohao Chen,
  • Ming Guan,
  • Shuai Wang,
  • Yan Su,
  • Haifang Wang,
  • Zhigang Chen,
  • Dayong Jin

DOI
https://doi.org/10.1038/s41467-021-24664-x
Journal volume & issue
Vol. 12, no. 1
pp. 1 – 9

Abstract

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Photon upconversion with near-infrared excitation and ultraviolet emission has many applications, but suffers from low quantum efficiency. Here, the authors report a six-photon upconversion process in nanoparticles with heterogeneous core-multishell structure, that regulate the energy transfer pathway.