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

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Vithanage, D. A. and Manousiadis, P. P. and Sajjad, M. T. and Rajbhandari, S. and Chun, H. and Orofino, C. and Cortizo-Lacalle, D. and Kanibolotsky, A. L. and Faulkner, G. and Findlay, N. J. and O'Brien, D. C. and Skabara, P. J. and Samuel, I. D W and Turnbull, G. A. (2016) BODIPY star-shaped molecules as solid state colour converters for visible light communications. Applied Physics Letters, 109 (1). 013302. ISSN 0003-6951 (https://doi.org/10.1063/1.4953789)

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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.

ORCID iDs

Vithanage, D. A., Manousiadis, P. P., Sajjad, M. T., Rajbhandari, S. ORCID logoORCID: https://orcid.org/0000-0001-8742-118X, Chun, H., Orofino, C., Cortizo-Lacalle, D., Kanibolotsky, A. L., Faulkner, G., Findlay, N. J. ORCID logoORCID: https://orcid.org/0000-0002-1417-3311, O'Brien, D. C., Skabara, P. J., Samuel, I. D W and Turnbull, G. A.;
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