Optical characterization of carbon quantum dots in colloidal suspensions

The remarkable feature of carbon quantum dots is the strong broadband photoluminescence of their colloidal solutions, which is observed on a variety of simple synthetic routes. This article describes the production of carbon nanodots (C-dots) with an average size of 3 nm in poly(ethylene glycol) by...

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Bibliographic Details
Published in:	Optical materials express Vol. 7; no. 2; pp. 401 - 408
Main Authors:	Castro, Hemerson P. S., Pereira, Magnus K., Ferreira, Vinícius C., Hickmann, Jandir M., Correia, Ricardo R. B.
Format:	Journal Article
Language:	English
Published:	01-02-2017
Subjects:	Broadband Carbon Colloids Laser ablation Optical properties Photoluminescence Quantum dots Spectra
Online Access:	Get full text
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Summary:	The remarkable feature of carbon quantum dots is the strong broadband photoluminescence of their colloidal solutions, which is observed on a variety of simple synthetic routes. This article describes the production of carbon nanodots (C-dots) with an average size of 3 nm in poly(ethylene glycol) by laser ablation and the evaluation of the spectral molar absorption coefficient, [epsilon]([lambda]), of these particles. In parallel we investigate optical properties as photoluminescence, lifetime and by a thermally managed Eclipse Z-scan we describe the thermo-optical properties of this colloidal suspension.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	2159-3930 2159-3930
DOI:	10.1364/OME.7.000401