Light: Science & Applications | Minotto A, Haigh PA, Łukasiewicz ŁG, Lunedei E, Gryko DT, et al. | Visible light communication (VLC) is a wireless technology that relies on optical intensity modula...
Visible light communication with efficient far-red/near-infrared polymer light-emitting diodes
Abstract
Visible light communication (VLC) is a wireless technology that relies on optical intensity modulation and is potentially a game changer for internet-of-things (IoT) connectivity. However, VLC is hindered by the low penetration depth of visible light in non-transparent media. One solution is to extend operation into the “nearly (in)visible” near-infrared (NIR, 700–1000 nm) region, thus also enabling VLC in photonic bio-applications, considering the biological tissue NIR semitransparency, while conveniently retaining vestigial red emission to help check the link operativity by simple eye inspection. Here, we report new far-red/NIR organic light-emitting diodes (OLEDs) with a 650–800 nm emission range and external quantum efficiencies among the highest reported in this spectral range (>2.7%, with maximum radiance and luminance of 3.5 mW/cm2 and 260 cd/m2, respectively). With these OLEDs, we then demonstrate a “real-time” VLC setup achieving a data rate of 2.2 Mb/s, which satisfies the requirements for IoT and biosensing applications. These are the highest rates ever reported for an online unequalised VLC link based on solution-processed OLEDs.
Publication Type: | Journal article |
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Publication Sub Type: | Article |
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Authors: | Minotto A, Haigh PA, Łukasiewicz ŁG, Lunedei E, Gryko DT, Darwazeh I, Cacialli F |
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Publisher: | Springer Science and Business Media LLC |
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Publication date: | 26/04/2020 |
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Journal: | Light: Science & Applications |
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Volume: | 9 |
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Issue: | 1 |
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Article Number : | 70 |
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Status: | Published online |
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DOI: | |
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Full Text URL: | |
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