Research Article
Enhanced Photovoltaic Properties of Dye-Sensitized Solar Cells through Ammonium Hydroxide-Modified (Nitrogen-Doped) Titania Photoanodes
Figure 5
(a) UV-visible absorption spectra of pure TiO2, 10N-TiO2, 20N-TiO2, 30N-TiO2, and 40N-TiO2 nanoparticles and (b) Tauc plot of the corresponding nanoparticles.
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