TY - JOUR

T1 - Flexible Glass Hybridized Colloidal Quantum Dots for Gb/s Visible Light Communications

AU - Foucher, Caroline

AU - Sufyan, Mohamed Islim

AU - Guilhabert, Benoit Jack Eloi

AU - Videv, Stefan

AU - Rajbhandari, Sujan

AU - Diaz, Ariel Gomez

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.

N1 - This work is licensed under a Creative Commons Attribution 3.0 License. For more information, see http://creativecommons.org/licenses/by/3.0/ © 20xx IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

PY - 2018/2/21

Y1 - 2018/2/21

N2 - Color converting films of colloidal quantum dots (CQDs) encapsulated with flexible glass are integrated with microsize GaN light emitting diodes (LEDs) 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 LEDs. 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 LEDs. 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 light emitting diodes (LEDs) 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 LEDs. 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 LEDs. 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.

KW - Light emitting diodes

KW - Glass

KW - Image color analysis

KW - Color

KW - Quantum dots

KW - Visible light communication

KW - Optical device fabrication

U2 - 10.1109/JPHOT.2018.2792700

DO - 10.1109/JPHOT.2018.2792700

M3 - Article

VL - 10

JO - IEEE Photonics Journal

JF - IEEE Photonics Journal

SN - 1943-0655

IS - 1

ER -