Effect of Silver Nanoparticle Size on Efficiency Enhancement of Dye-Sensitized Solar Cells

Figure 5

TEM micrographs and size distributions of silver nanoparticles prepared by photocatalytic reduction in a 0.1 M AgNO₃ solution on the carbon-coated copper grids at UV exposure times of (a) 5 minutes, (b) 120 minutes, and (c) 240 minutes, respectively. The average size increases and the distribution broadens with an increase in the UV exposure time. (Note: graph plotted by OriginLab software program).

(a)

(b)

(c)