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Fig. 3 | Nanoscale Research Letters

Fig. 3

From: Surface States Induced Photoluminescence Enhancement of Nitrogen-Doped Carbon Dots Via Post-Treatments

Fig. 3

a PL spectra of NCDs treated with different concentration of NaBH4 ranging from 0 to 0.04 g/mL, λex = 400 nm. b Digital photographs of NCDs treated with 0, 0.01, and 0.04 g/mL NaBH4 under an UV lamp. Deconvoluted PL spectra of NCDs treated with c 0.005 and d 0.04 g/mL NaBH4 separately with two emission bands of peak 1 and peak 2. e UV-vis absorption spectra of NCDs treated with 0 and 0.04 g/mL NaBH4. f The schematic illustration of the proposed emission process in the original and reduced NCDs

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