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A saturated red color converter for visible light communication using a blend of star-shaped organic semiconductors

Sajjad, M. T. and Manousiadis, P. P. and Orofino, C. and Kanibolotsky, A. L. and Findlay, N. J. and Rajbhandari, S. and Vithanage, D. A. and Chun, H. and Faulkner, G. E. and O'Brien, D. C. and Skabara, P. J. and Turnbull, G. A. and Samuel, I. D. W. (2017) A saturated red color converter for visible light communication using a blend of star-shaped organic semiconductors. Applied Physics Letters, 110 (1). ISSN 0003-6951

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Abstract

We report a study of blends of semiconducting polymers as saturated red color converters to replace commercial phosphors in hybrid Light emitting diodes (LEDs) for visible light communication (VLC). By blending two star-shaped organic semiconductor molecules, we found a near complete energy transfer (>90% efficiency) from the green-emitting truxene-cored compound T4BT-B to the red-emitting boron dipyrromethene (BODIPY) cored materials. Furthermore, we have demonstrated the capability of these materials as fast color converters for VLC by measuring their intrinsic optical modulation bandwidth and data rate. The measured 3 dB modulation bandwidth of blends (∼55 MHz) is more than 10 times higher than commercially available LED phosphors and also higher than the red-emitting BODIPY color converter alone in solution. The data rate achieved with this blend is 20 times higher than measured with a commercially available phosphor based color converter.

Item type: Article
ID code: 60821
Notes: © 2016, the Author(s). This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at scitation.aip.org / https://doi.org/10.1063/1.4971823
Keywords: visible light communication, wireless communication, GaN LED, saturated red color converters, semiconducting polymers, light emitting diodes, boron dipyrromethene, Physics, Physics and Astronomy (miscellaneous)
Subjects: Science > Physics
Department: Faculty of Science > Pure and Applied Chemistry
Technology and Innovation Centre > Photonics
Depositing user: Pure Administrator
Date deposited: 06 Jun 2017 00:48
Last modified: 23 Sep 2017 11:40
Related URLs:
URI: https://strathprints.strath.ac.uk/id/eprint/60821
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