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Gb/s Visible Light Communications with Colloidal Quantum Dot Color Converters

Research output: Contribution to journalArticlepeer-review

  • Miguel F. Leitao
  • Joao M.M. Santos
  • Benoit Guilhabert
  • Scott Watson
  • Anthony E. Kelly
  • Mohamed S. Islim
  • Harald Haas
  • Martin D. Dawson
  • Nicolas Laurand

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Original languageEnglish
Article number7907282
JournalIEEE Journal of Selected Topics in Quantum Electronics
Issue number5
Publication statusPublished - 24 Apr 2017


This paper reports the utilization of colloidal semiconductor quantum dots as color converters for Gb/s visible light communications. We briefly review the design and properties of colloidal quantum dots and discuss them in the context of fast color conversion of InGaN light sources, in particular in view of the effects of self-absorption. This is followed by a description of a CQD/polymer composite format of color converters. We show samples of such color-converting composite emitting at green, yellow/orange and red wavelengths, and combine these with a blue-emitting microsize LED to form hybrid sources for wireless visible light communication links. In this way data rates up to 1 Gb/s over distances of a few tens of centimeters have been demonstrated. Finally, we broaden the discussion by considering the possibility for wavelength division multiplexing as well as the use of alternative colloidal semiconductor nanocrystals.

    Research areas

  • colloidal quantum dots, GaN, LED, OFDM, semiconductor nanocrystal, Visible light communications

ID: 45222121