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

Chiranthika Dimali Amarasinghe Vithanage, Pavlos Manousiadis, Muhammad Tariq Sajjad, Sujan Rajbhandari, Hyunchae Chun, Clara Orofino, Diego Cortizo-Lacalle, Alexander Kanibolotsky, Grahame Faulkner, Neil Findlay, Dominic O'Brien, Peter Skabara, Ifor David William Samuel, Graham Alexander Turnbull

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17 Citations (Scopus)
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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 - 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 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.
Original languageEnglish
Article number013302
JournalApplied Physics Letters
Volume109
Issue number1
DOIs
Publication statusPublished - 6 Jul 2016

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