Novel fast color-converter for visible light communication using a blend of conjugated polymers

M.T. Sajjad, P.P. Manousiadis, H. Chun, D.A. Vithanage, S. Rajbhandari, A.L. Kanibolotsky, G. Faulkner, D. Obrien, P.J. Skabara, I.D.W. Samuel, G.A. Turnbull

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46 Citations (Scopus)
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Visible Light Communications (VLC) is a promising new technology which could offer higher data transmission rates than existing broadband RF/microwave wireless technologies. In this paper, we show that a blend of semiconducting polymers can be used to make a broadband, balanced color converter with a very high modulation bandwidth to replace commercial phosphors in hybrid LEDs for visible light communications. The resulting color converter exploits partial Förster energy transfer in a blend of the highly fluorescent green emitter BBEHP-PPV and orange-red emitting MEH-PPV. We quantify the efficiency of the photoinduced energy transfer from BBEHP-PPV to MEH-PPV, and demonstrate modulation bandwidths (electrical-electrical) of ∼200 MHz, which are 40 times higher than commercially available phosphor LEDs. Furthermore, the VLC data rate achieved with this blend using On-Off Keying (OOK) is many times (∼35) higher than that measured with a commercially available phosphor color converter.
Original languageEnglish
Pages (from-to)194-199
Number of pages6
JournalACS Photonics
Issue number2
Early online date28 Jan 2015
Publication statusPublished - 18 Feb 2015


  • Organic semiconductor
  • Color converter
  • Energy transfer
  • Solid-state lighting
  • LED


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