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Fabrication of fluorescent carbon dots by laser ablation in alkaline solution coupled with Ag nanoparticles for enhanced SERS


In this work, SERS enhancement is realized by plasmon coupling and fluorescence resonance energy transfer (FRET) processes concerning to fluorescent carbon dots (CDs) coupled with silver nanoparticles (Ag-NPs). Laser ablation in alkaline solution is a promising strategy to synthesize well-dispersed CDs with sizes below 10 nm by simultaneously creating defect states and oxygen-related functional groups. SERS studies indicated that an amplified signal can be recorded for the hybrid substrate composed by CDs and Ag-NPs. The optimized hybrid substrate comprised of CDs and cubic Ag-NPs has a SERS detection limit of 10−8 M for 4-ATP, indicating the potential applications for trace detection.

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Data availability

The datasets generated during and analysed during the current study are available from the corresponding author on reasonable request.


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This research was funded by the Fujian Provincial Science and Technology Programme (Industry Oriented Key Project, No. 2020H0006), National Natural Science Foundation of China (No. 61605162) and Collaborative Innovation Center of High-End Equipment Manufacturing in Fujian.


Fujian Provincial Science and Technology Programme (Industry Oriented Key Project, No. 2020H0006), National Natural Science Foundation of China (No. 61605162).

Author information




Conceptualization: ZC, RZ; Methodology: ZC, RZ; Investigation: LL; Validation: ZC; Data Curation: ZC, LL; Writing—Original Draft: ZC; Writing—Review & Editing: RZ, JC, HY; Resources: RZ, JC, HY; Supervision: RZ; Management: RZ; Funding acquisition: RZ.

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Correspondence to Rui Zhou.

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Chen, Z., Zhou, R., Cui, J. et al. Fabrication of fluorescent carbon dots by laser ablation in alkaline solution coupled with Ag nanoparticles for enhanced SERS. MRS Communications 11, 489–497 (2021).

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  • Surface enhanced Raman spectroscopy (SERS)
  • Laser ablation
  • Nanostructure
  • Optical properties