Abstract
We report a simple and effective route to easily prepare multi-emission carbon dots (CDs) and CdTe/carbon highly fluorescent assemblies by employing general and low-cost ubiquitous herbages as carbon source. Four kinds of herbages including radix pseudostellariae, ganoderma, liquorice, and angelica were pyrolyzed to straightly generate narrow-size distributed bare CDs. The as-prepared bare CDs have excellent solubility in various organic solvents without further treatment and exhibit bright photoluminescence with the quantum yields up to 28 %. After further treatment with nitric acid and amine-terminated compound 4,7,10-trioxa-1,13-tridecanediamine, the passivated CDs can be combined together with traditional CdTe QDs to form new ensembles for evoking their collective properties. The resulted CD solutions were proven that can be employed as fluorescent inks for patterning which may useful in anti-counterfeit and optoelectronic devices.
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Acknowledgements
This work was supported by the National High Technology Research and Development Program of China (863 Program) (2012AA030313), National Natural Science Foundation of China (21006046 and 21474052), Natural Science Foundation of Jiangsu Province (BK20131408, BK20140458 and BK20150418), and Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).
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Guo, X., Ji, WQ., Wang, CF. et al. Herbages-derived fluorescent carbon dots and CdTe/carbon ensembles for patterning. J Mater Sci 51, 8108–8115 (2016). https://doi.org/10.1007/s10853-016-0081-7
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DOI: https://doi.org/10.1007/s10853-016-0081-7