Issue 23, 2020

High color rendering indices of white light-emitting diodes based on environmentally friendly carbon and AIZS nanoparticles

Abstract

Solid-state white light-emitting diodes (WLEDs) based on carbon dots (CDs) have attracted broad attention due to their high brightness and environmental friendliness. However, the poor performance, including low efficiency and weak emission of red-emitting CDs, further hinder their application in WLED devices. Herein, we constructed one outstanding WLED device by combining carbon dots (blue emission and green emission) and Ag–In–Zn–S (AIZS) nanoparticles with red emission. Moreover, by adjusting the volume ratio of the three materials, the WLED showed a maximum color rendering index (CRI) of 97 and maintained a CRI value above 90 as the correlated color temperature (CCT) was tuned from 3387 to 8018 K. Meanwhile, the as-fabricated WLED devices showed excellent color rendering stability during the adjustment of working voltages from 3.0 V to 3.5 V. This work may provide one new avenue for the development of low-cost, environmentally friendly and high-performance CD phosphor-based WLEDs.

Graphical abstract: High color rendering indices of white light-emitting diodes based on environmentally friendly carbon and AIZS nanoparticles

Supplementary files

Article information

Article type
Paper
Submitted
07 Mar 2020
Accepted
21 Apr 2020
First published
22 Apr 2020

J. Mater. Chem. C, 2020,8, 7734-7740

High color rendering indices of white light-emitting diodes based on environmentally friendly carbon and AIZS nanoparticles

Y. Huang, H. Lin, J. Qiu, Z. Luo, Z. Yao, L. Liu, H. Liu, X. Tang and X. Fu, J. Mater. Chem. C, 2020, 8, 7734 DOI: 10.1039/D0TC01192D

To request permission to reproduce material from this article, 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 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