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. 2014 Oct 13;9(1):571. doi: 10.1186/1556-276X-9-571

Figure 7.

Figure 7

UV–vis transmittance spectra of C-Si-nc suspensions and derivative of transmittance spectra to obtain optical bandgap. (a) Colloidal suspension with methanol as solvent. (b) Colloidal suspension with solvent ethanol as solvent. (c and d) Colloidal suspension with acetone as solvent.