Optical Design of Porous ZnO/TiO₂ Films for Highly Transparent Glasses with Broadband Ultraviolet Protection

Figure 1

(a) Schematic illustration of the designed film for transparent UV protection. (b) Extinction coefficients of TiO₂ and ZnO. The inset shows refractive indices (RIs) of TiO₂ and ZnO [26, 27]. (c) RI profiles versus height of UV absorbing film (left) and UV absorbing film with porosity (). (d) The calculated transmittance of the layer coating of TiO₂   70% and ZnO 80% and bilayer film with them stacked as a function of wavelength. The inset of (d) shows the transmittance of the nonporous single layer film and designed film.

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