Research Article
Influence of Cu-Doping Concentration on the Structural and Optical Properties of SnO2 Nanoparticles by Coprecipitation Route
Figure 4
SEM images of (a) pure SnO2; (b) 1% Cu-doped; (c) 2% Cu-doped; (d) 3% Cu-doped; and (e) 4% Cu-doped SnO2. TEM micrographs of (f) pure SnO2; (g) 2% Cu-doped SnO2; (h) 4% Cu-doped SnO2.
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