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 journalArticle

2 Citations (Scopus)

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.
LanguageEnglish
Number of pages11
JournalIEEE Photonics Journal
Volume10
Issue number1
Early online date12 Jan 2018
DOIs
Publication statusPublished - 28 Feb 2018

Fingerprint

Semiconductor quantum dots
Light emitting diodes
optical communication
light emitting diodes
quantum dots
Glass
glass
Lighting
Display devices
Color
color
free-space optical communication
Optical communication
Sapphire
Phosphors
illuminating
Conversion efficiency
phosphors
format
converters

Keywords

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

Cite this

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.",
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Foucher, C, Islim, MI, Guilhabert, BJE, Videv, S, Rajbhandari, S, Gomez Diaz, A, Chun, H, Vithanage, DA, Turnbull, GA, Samuel, IDW, Faulkner, G, O'Brien, DC, Haas, H, Laurand, N & Dawson, MD 2018, 'Flexible glass hybridized colloidal quantum dots for Gb/s visible light communications' IEEE Photonics Journal, vol. 10, no. 1. https://doi.org/10.1109/JPHOT.2018.2792700

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 journalArticle

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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.

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KW - light emitting diodes

KW - glass

KW - image colour analysis

KW - quantum dots

KW - visible light communication

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U2 - 10.1109/JPHOT.2018.2792700

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JO - IEEE Photonics Journal

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