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

Sajjad, M.T. et al. (2017) A saturated red color converter for visible light communication using a blend of star-shaped organic semiconductors. Applied Physics Letters, 110(1), 013302. (doi: 10.1063/1.4971823)

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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:Articles
Additional Information:The authors would like to acknowledge the EPSRC for financial support for the programme/project from grants EP/ K00042X/I and EP/L017008/I.
Glasgow Author(s) Enlighten ID:Skabara, Professor Peter and Findlay, Dr Neil
Authors: Sajjad, M.T., Manousiadis, P.P., Orofino, C., Kanibolotsky, A.L., Findlay, N.J., Rajbhandari, S., Vithanage, D.A., Chun, H., Faulkner, G.E., O'Brien, D.C., Skabara, P.J., Turnbull, G.A., and Samuel, I.D.W.
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Applied Physics Letters
Publisher:AIP Publishing
ISSN (Online):1077-3118
Published Online:06 January 2017
Copyright Holders:Copyright © 2017 AIP Publishing
First Published:First published in Applied Physics Letters 110(1): 013302
Publisher Policy:Reproduced in accordance with the publisher copyright policy
Data DOI:10.17630/b117fce7-9de4-4af3-a4bf-368096c014af

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