Research Article
Enhanced Photovoltaic Properties of Dye-Sensitized Solar Cells through Ammonium Hydroxide-Modified (Nitrogen-Doped) Titania Photoanodes
Figure 3
TEM images of (a) pure TiO2, (b) 20N-TiO2, and (c) 40N-TiO2 nanoparticles; HRTEM images of (d) pure TiO2 and (e) 20N-TiO2.
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