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Synthesis of broad photoluminescence carbon nanodots by femtosecond laser ablation in liquid

Nguyen, V. and Yan, L. and Si, J. (2016) Synthesis of broad photoluminescence carbon nanodots by femtosecond laser ablation in liquid. In: 16th IEEE International Conference on Nanotechnology - IEEE NANO 2016, 22 August 2016 through 25 August 2016.

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Abstract

Carbon nanodots (C-dots) with broad emissions when excitation wavelength changes in a large region are suitable for a broad range of applications, including optical down-conversion devices, bioimaging, and biosensors by selecting different excitation wavelengths without changing their structure. Herein, C-dots exhibiting broad photoluminescence from blue to green regions with strong excitation-dependence have been synthesized via femtosecond laser ablation in ethylenediamine solution. Detailed characterization showed that abundant surface functional groups, such as C-N, C-H, and C-O have been created on the surface of C-dots, which can efficiently introduce new emission centers on the surface site and result in the broad emissions. © 2016 IEEE.

Item Type: Conference or Workshop Item (Paper)
Divisions: Offices > Office of International Cooperation
Identification Number: 10.1109/NANO.2016.7751350
Uncontrolled Keywords: Ablation; Laser excitation; Nanoparticles; Nanotechnology; Photoluminescence; Ultrashort pulses; Carbon nanodots; Down conversion; Emission centers; Ethylenediamine solution; Excitation dependence; Excitation wavelength; Femtosecond laser ablation in liquid; Surface functional groups; Laser ablation
Additional Information: Conference code: 125071. Language of original document: English.
URI: http://eprints.lqdtu.edu.vn/id/eprint/9789

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