Glass Frit Dissolution Influenced by Material Composition and the Water Content in Iodide/Triiodide Electrolyte of Dye-Sensitized Solar Cells

Figure 3

(a) Absorbance spectra of I₃⁻ in PMIM-I at various concentrations. 45 𝜇m light path length, H₂O as baseline. The absorbance peak of I₃⁻ is seen at 366 nm. (b) Linear dependence of I₃⁻ concentration with absorbance at, respectively, 366 nm and 430 nm. The linearity at 430 nm is important since the absorbance spectra for the test cells are saturated at 366 nm. Therefore, the decrease in absorbance at 430 nm for the test cells is correlated with the loss of I₃⁻.