BODIPY star-shaped molecules as solid state colour converters for visible light communications

D. A. Vithanage, P. P. Manousiadis, M. T. Sajjad, S. Rajbhandari, H. Chun, C. Orofino, D. Cortizo-Lacalle, A. L. Kanibolotsky, G. Faulkner, N. J. Findlay, D. C. O'Brien, P. J. Skabara, I. D W Samuel, G. A. Turnbull

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Abstract

In this paper, we study a family of solid-state, organic semiconductors for visible light communications. The star-shaped molecules have a boron-dipyrromethene (BODIPY) core with a range of side arm lengths which control the photophysical properties. The molecules emit red light with photoluminescence quantum yields ranging from 22% to 56%. Thin films of the most promising BODIPY molecules were used as a red colour converter for visible light communications. The film enabled colour conversion with a modulation bandwidth of 73 MHz, which is 16 times higher than that of a typical phosphor used in LED lighting systems. A data rate of 370 Mbit/s was demonstrated using On-Off keying modulation in a free space link with a distance of ∼15 cm.

Original languageEnglish
Article number013302
Number of pages4
JournalApplied Physics Letters
Volume109
Issue number1
DOIs
Publication statusPublished - 4 Jul 2016

Keywords

  • boron-dipyrromethene
  • BODIPY
  • LED lighting systems
  • visible light communications
  • solid solutions
  • phosphors
  • organic semiconductors
  • light emitting diodes

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    Vithanage, D. A., Manousiadis, P. P., Sajjad, M. T., Rajbhandari, S., Chun, H., Orofino, C., Cortizo-Lacalle, D., Kanibolotsky, A. L., Faulkner, G., Findlay, N. J., O'Brien, D. C., Skabara, P. J., Samuel, I. D. W., & Turnbull, G. A. (2016). BODIPY star-shaped molecules as solid state colour converters for visible light communications. Applied Physics Letters, 109(1), [013302]. https://doi.org/10.1063/1.4953789