Issue 16, 2019, Issue in Progress

Yellow fluorescent graphene quantum dots as a phosphor for white tunable light-emitting diodes

Abstract

In recent decades, quantum dots have been considered to be highly promising photoluminescent materials for white light devices. During the application of quantum dots in the fabrication of white LEDs, the spectrum and color temperature of the devices are modulated; these devices often involve quantum dots with different emission wavelengths. In this study, yellow-green emitting graphene quantum dots (GQDs) were fabricated using a simple, low-cost and eco-friendly method. The obtained GQDs were cast in UV-curable siloxane. Then, a polymer film with superior optical transparency and excellent monodisperse properties of GQDs was formed. Via the simple adjustment of thickness and the GQD concentration of the color convert matrix, tunable color temperatures (3196–10 870 K) of the GQD-based white light-emitting diodes (LEDs) were achieved. The CIE (Commission Internationale de L'Eclairage) coordinates of the GQD-based white light-emitting diodes matched well with the blackbody radiation curve. Using the fluorescent polymeric matrix in white LEDs, good quality emission and gratifying stability could be obtained. Moreover, this indicates that this technology has the potential for applications in high-end lighting.

Graphical abstract: Yellow fluorescent graphene quantum dots as a phosphor for white tunable light-emitting diodes

Supplementary files

Article information

Article type
Paper
Submitted
17 Dec 2018
Accepted
07 Mar 2019
First published
21 Mar 2019
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2019,9, 9301-9307

Yellow fluorescent graphene quantum dots as a phosphor for white tunable light-emitting diodes

L. Yin, J. Zhou, W. Li, J. Zhang and L. Wang, RSC Adv., 2019, 9, 9301 DOI: 10.1039/C8RA10353D

This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. You can use material from this article in other publications, without requesting further permission from the RSC, provided that the correct acknowledgement is given and it is not used for commercial purposes.

To request permission to reproduce material from this article in a commercial publication, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party commercial publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements