Performance of Natural Dye Extracted from Annatto, Black Plum, Turmeric, Red Spinach, and Cactus as Photosensitizers in TiO₂NP/TiNT Composites for Solar Cell Applications

Figure 5

FT-IR spectra of (a) annatto dye, (b) black plum dye, (c) turmeric dye, (d) red spinach dye, and (e) cactus dye.

(a)

(b)

(c)

(d)

(e)