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. 2013 Apr 23;3:1703. doi: 10.1038/srep01703

Figure 3. PL spectra of SF-SAND.

Figure 3

(a) PL spectra of SF-SAND were obtained at different excitation wavelengths, progressively increasing from 280 nm to 540 nm in 20 nm increments. The inset is the normalized PL spectra. (b) Color photograph of the SF-SAND solutions under visible (left) and under 365 nm UV light (right).