Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/80356
Title: Graphene quantum dots from chemistry to applications
Authors: Tian, P
Tang, L
Teng, KS
Lau, SP 
Keywords: Electrical properties
Graphene quantum dots
Nanostructured graphene
Optical properties
Optoelectronics
Issue Date: 2018
Publisher: Elsevier
Source: Materials today chemistry, 2018, v. 10, p. 221-258 How to cite?
Journal: Materials today chemistry 
Abstract: Graphene quantum dots (GQDs) have been widely studied in recent years due to its unique structure-related properties, such as optical, electrical and optoelectrical properties. GQDs are considered new kind of quantum dots (QDs), as they are chemically and physically stable because of its intrinsic inert carbon property. Furthermore, GQDs are environmentally friendly due to its non-toxic and biologically inert properties, which have attracted worldwide interests from academic and industry. In this review, a number of GQDs preparation methods, such as hydrothermal method, microwave-assisted hydrothermal method, soft-template method, liquid exfoliation method, metal-catalyzed method and electron beam lithography method etc., are summarized. Their structural, morphological, chemical composition, optical, electrical and optoelectrical properties have been characterized and studied. A variety of elemental dopant, such as nitrogen, sulphur, chlorine, fluorine and potassium etc., have been doped into GQDs to diversify the functions of the material. The control of its size and shape has been realized by means of preparation parameters, such as synthesis temperature, growth time, source concentration and catalyst etc. As far as energy level engineering is concerned, the elemental doping has shown an introduction of energy level in GQDs which may tune the optical, electrical and optoelectrical properties of the GQDs. The applications of GQDs in biological imaging, optoelectrical detectors, solar cells, light emitting diodes, fluorescent agent, photocatalysis, and lithium ion battery are described. GQD composites, having optimized contents and properties, are also discussed to extend the applications of GQDs. Basic physical and chemical parameters of GQDs are summarized by tables in this review, which will provide readers useful information.
URI: http://hdl.handle.net/10397/80356
ISSN: 2468-5194
DOI: 10.1016/j.mtchem.2018.09.007
Rights: ©2018 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
The following publication: Tian, P., Tang, L., Teng, K. S., & Lau, S. P. (2018). Graphene quantum dots from chemistry to applications. Materials today chemistry, 10, 221-258 is available at https://doi.org/10.1016/j.mtchem.2018.09.007
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