Jump to main content
Jump to site search


Microwave-assisted hydrothermal synthesis of solid-state carbon dots with intensive emission for white light-emitting devices

Abstract

A one-pot microwave-assisted hydrothermal approach was developed to quickly synthesize organosilane-functionalized carbon dots (Si-CDs) within 5 minutes. With the assistance of N-(β-Aminoethyl)-γ-aminopropyl trimethoxysilane (KH-792) as distance barrier chains, the aggregation-caused quenching is suppressed successfully, which contributes to solid-state Si-CDs emitting bright blue fluorescence (λem~454 nm). The photoluminescence quantum yield of as-prepared Si-CDs in solid state reaches 65.8% with an optimized molar ratio of the reactant citric acid to KH-792 of 1:5 and the reaction temperature of 180°C, which is 2.5-fold that of their solution. Together with their good film-forming ability and thermal stability, Si-CDs were applied to fabricate a white-light-emitting device with the color coordinates of (0.32, 0.36) and the correlated color temperature of 6071 K. Our results indicate that the as-prepared Si-CDs are promising materials with efficient solid-state emission to be used in the lighting, backlight display and other optoelectronic devices.

Back to tab navigation

Supplementary files

Publication details

The article was received on 19 Apr 2017, accepted on 13 Jul 2017 and first published on 15 Jul 2017


Article type: Paper
DOI: 10.1039/C7TC01701D
Citation: J. Mater. Chem. C, 2017, Accepted Manuscript
  •   Request permissions

    Microwave-assisted hydrothermal synthesis of solid-state carbon dots with intensive emission for white light-emitting devices

    J. Zheng, Y. Wang, F. Zhang, Y. Yang, X. Liu, K. Guo, H. Wang and B. Xu, J. Mater. Chem. C, 2017, Accepted Manuscript , DOI: 10.1039/C7TC01701D

Search articles by author

Spotlight

Advertisements