Flexible glass hybridized colloidal quantum dots for Gb/s visible light communications

Caroline Foucher; Mohamed Islim Islim; Benoit Jack Eloi Guilhabert; Stefan Videv; Sujan Rajbhandari; Ariel  Gomez Diaz; Hyunchae Chun; Dimali A. Vithanage; Graham A. Turnbull; Ifor D. W. Samuel; Grahame Faulkner; Dominic C. O'Brien; Harald Haas; Nicolas Laurand; Martin D. Dawson

doi:10.1109/JPHOT.2018.2792700

Flexible glass hybridized colloidal quantum dots for Gb/s visible light communications

Caroline Foucher, Mohamed Islim Islim, Benoit Jack Eloi Guilhabert, Stefan Videv, Sujan Rajbhandari, Ariel Gomez Diaz, Hyunchae Chun, Dimali A. Vithanage, Graham A. Turnbull, Ifor D. W. Samuel, Grahame Faulkner, Dominic C. O'Brien, Harald Haas, Nicolas Laurand, Martin D. Dawson

Research output: Contribution to journal › Article

4 Citations (Scopus)

45 Downloads (Pure)

Abstract

Color converting films of colloidal quantum dots (CQDs) encapsulated with flexible glass are integrated with microsize GaN LEDs (μLEDs) in order to form optical sources for high-speed visible light communications (VLC). VLC is an emerging technology that uses white and/or colored light from LEDs to combine illumination and display functions with the transmission of data. The flexible glass/CQD format addresses the issue of limited modulation speed of typical phosphor-converted LEDs while enhancing the photostability of the color converters and facilitating their integration with the μLEDs. These structures are less than 70 μm in total thickness and are directly placed in contact with the polished sapphire substrate of 450-nm-emitting μLEDs. Blue-to-green, blue-to-orange and blue-to-red conversion with respective forward optical power conversion efficiencies of 13%, 12% and 5.5% are reported. In turn, free-space optical communications up to 1.4 Gb/s VLC is demonstrated. Results show that CQD-converted LEDs pave the way for practical digital lighting/displays with multi-Gb/s capability.

Original language	English
Number of pages	11
Journal	IEEE Photonics Journal
Volume	10
Issue number	1
Early online date	12 Jan 2018
DOIs	https://doi.org/10.1109/JPHOT.2018.2792700
Publication status	Published - 28 Feb 2018

Keywords

light emitting diodes
glass
image colour analysis
quantum dots
visible light communication

Access to Document

10.1109/JPHOT.2018.2792700Licence: CC BY 3.0

Foucher-etal-IEEE-PJ-2018-Flexible-glass-hybridized-colloidal-quantum-dots-forFinal published version, 389 KBLicence: CC BY 3.0

http://ieeexplore.ieee.org/document/8255623/

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Projects

2 Finished

Hybrid Colloidal Quantum Dot Nanocomposite Lasers for Flexible Photonics

Laurand, N.

EPSRC (Engineering and Physical Sciences Research Council)

1/10/12 → 30/09/14

Project: Research

Ultra-Parallel Visible Light Communications (UP-VLC)

Dawson, M., Calvez, S. & Watson, I.

EPSRC (Engineering and Physical Sciences Research Council)

1/10/12 → 28/02/17

Project: Research

Datasets

Colloidal quantum dot with flex-glass encapsulation as color-converter for micro-LED source in visible light communications

Foucher, C. (Creator), University of Strathclyde, 15 Dec 2016

DOI: 10.15129/d4d7d1d3-c220-4965-81b4-6a0de3824717

Dataset

Cite this

Foucher, C., Islim, M. I., Guilhabert, B. J. E., Videv, S., Rajbhandari, S., Gomez Diaz, A., ... Dawson, M. D. (2018). Flexible glass hybridized colloidal quantum dots for Gb/s visible light communications. IEEE Photonics Journal, 10(1). https://doi.org/10.1109/JPHOT.2018.2792700

Foucher, Caroline ; Islim, Mohamed Islim ; Guilhabert, Benoit Jack Eloi ; Videv, Stefan ; Rajbhandari, Sujan ; Gomez Diaz, Ariel ; Chun, Hyunchae ; Vithanage, Dimali A. ; Turnbull, Graham A. ; Samuel, Ifor D. W. ; Faulkner, Grahame ; O'Brien, Dominic C. ; Haas, Harald ; Laurand, Nicolas ; Dawson, Martin D. / Flexible glass hybridized colloidal quantum dots for Gb/s visible light communications. In: IEEE Photonics Journal. 2018 ; Vol. 10, No. 1.

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abstract = "Color converting films of colloidal quantum dots (CQDs) encapsulated with flexible glass are integrated with microsize GaN LEDs (μLEDs) in order to form optical sources for high-speed visible light communications (VLC). VLC is an emerging technology that uses white and/or colored light from LEDs to combine illumination and display functions with the transmission of data. The flexible glass/CQD format addresses the issue of limited modulation speed of typical phosphor-converted LEDs while enhancing the photostability of the color converters and facilitating their integration with the μLEDs. These structures are less than 70 μm in total thickness and are directly placed in contact with the polished sapphire substrate of 450-nm-emitting μLEDs. Blue-to-green, blue-to-orange and blue-to-red conversion with respective forward optical power conversion efficiencies of 13{\%}, 12{\%} and 5.5{\%} are reported. In turn, free-space optical communications up to 1.4 Gb/s VLC is demonstrated. Results show that CQD-converted LEDs pave the way for practical digital lighting/displays with multi-Gb/s capability.",

keywords = "light emitting diodes, glass, image colour analysis, quantum dots, visible light communication",

author = "Caroline Foucher and Islim, {Mohamed Islim} and Guilhabert, {Benoit Jack Eloi} and Stefan Videv and Sujan Rajbhandari and {Gomez Diaz}, Ariel and Hyunchae Chun and Vithanage, {Dimali A.} and Turnbull, {Graham A.} and Samuel, {Ifor D. W.} and Grahame Faulkner and O'Brien, {Dominic C.} and Harald Haas and Nicolas Laurand and Dawson, {Martin D.}",

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Flexible glass hybridized colloidal quantum dots for Gb/s visible light communications. / Foucher, Caroline; Islim, Mohamed Islim; Guilhabert, Benoit Jack Eloi; Videv, Stefan; Rajbhandari, Sujan; Gomez Diaz, Ariel ; Chun, Hyunchae; Vithanage, Dimali A.; Turnbull, Graham A.; Samuel, Ifor D. W.; Faulkner, Grahame; O'Brien, Dominic C.; Haas, Harald; Laurand, Nicolas ; Dawson, Martin D.

In: IEEE Photonics Journal, Vol. 10, No. 1, 28.02.2018.

Research output: Contribution to journal › Article

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AU - Foucher, Caroline

AU - Islim, Mohamed Islim

AU - Guilhabert, Benoit Jack Eloi

AU - Videv, Stefan

AU - Rajbhandari, Sujan

AU - Gomez Diaz, Ariel

AU - Chun, Hyunchae

AU - Vithanage, Dimali A.

AU - Turnbull, Graham A.

AU - Samuel, Ifor D. W.

AU - Faulkner, Grahame

AU - O'Brien, Dominic C.

AU - Haas, Harald

AU - Laurand, Nicolas

AU - Dawson, Martin D.

PY - 2018/2/28

Y1 - 2018/2/28

N2 - Color converting films of colloidal quantum dots (CQDs) encapsulated with flexible glass are integrated with microsize GaN LEDs (μLEDs) in order to form optical sources for high-speed visible light communications (VLC). VLC is an emerging technology that uses white and/or colored light from LEDs to combine illumination and display functions with the transmission of data. The flexible glass/CQD format addresses the issue of limited modulation speed of typical phosphor-converted LEDs while enhancing the photostability of the color converters and facilitating their integration with the μLEDs. These structures are less than 70 μm in total thickness and are directly placed in contact with the polished sapphire substrate of 450-nm-emitting μLEDs. Blue-to-green, blue-to-orange and blue-to-red conversion with respective forward optical power conversion efficiencies of 13%, 12% and 5.5% are reported. In turn, free-space optical communications up to 1.4 Gb/s VLC is demonstrated. Results show that CQD-converted LEDs pave the way for practical digital lighting/displays with multi-Gb/s capability.

AB - Color converting films of colloidal quantum dots (CQDs) encapsulated with flexible glass are integrated with microsize GaN LEDs (μLEDs) in order to form optical sources for high-speed visible light communications (VLC). VLC is an emerging technology that uses white and/or colored light from LEDs to combine illumination and display functions with the transmission of data. The flexible glass/CQD format addresses the issue of limited modulation speed of typical phosphor-converted LEDs while enhancing the photostability of the color converters and facilitating their integration with the μLEDs. These structures are less than 70 μm in total thickness and are directly placed in contact with the polished sapphire substrate of 450-nm-emitting μLEDs. Blue-to-green, blue-to-orange and blue-to-red conversion with respective forward optical power conversion efficiencies of 13%, 12% and 5.5% are reported. In turn, free-space optical communications up to 1.4 Gb/s VLC is demonstrated. Results show that CQD-converted LEDs pave the way for practical digital lighting/displays with multi-Gb/s capability.

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KW - image colour analysis

KW - quantum dots

KW - visible light communication

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