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

Sajjad, M. T. et al. (2015) Novel fast color-converter for visible light communication using a blend of conjugated polymers. ACS Photonics, 2(2), pp. 194-199. (doi: 10.1021/ph500451y)

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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.

Item Type:Articles (Letter)
Glasgow Author(s) Enlighten ID:Skabara, Professor Peter
Authors: Sajjad, M. T., Manousiadis, P. P., Chun, H., Vithanage, D. A., Rajbhandari, S., Kanibolotsky, A. L., Faulkner, G., O’Brien, D., Skabara, P. J., Samuel, I. D. W., and Turnbull, G. A.
College/School:College of Science and Engineering > School of Chemistry
Journal Name:ACS Photonics
Publisher:American Chemical Society
ISSN (Online):2330-4022
Copyright Holders:Copyright © 2015 ACS
First Published:First published in ACS Photonics 2:194-199
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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