UV-Vis DRS and Tauc Analysis of TiOx Thin Films: Ti400 to Ti800

UV-Vis DRS and Tauc Analysis of TiOx Thin Films: Ti400 to Ti800

Figure 3-8 presents a comprehensive analysis of the optical properties of various TiOx thin films, ranging from Ti400 to Ti800.

(a) UV-Vis DRS Spectra: The left side of Figure 3-8 displays the UV-Vis Diffuse Reflectance Spectra (DRS) for each TiOx thin film. These spectra reveal crucial information about the light absorption characteristics of the materials at different wavelengths.

(b) Tauc Plots: The right side of Figure 3-8 presents the Tauc plots derived from the UV-Vis DRS data. Tauc plots are essential for determining the optical band gap energy (Eg) of semiconductor materials like TiOx. By analyzing the linear region of the Tauc plot, we can estimate the band gap values for Ti400, Ti500, Ti600, Ti700, and Ti800.

Key Insights:

• The UV-Vis DRS and Tauc plots allow us to compare and contrast the optical properties of different TiOx thin films.* Variations in the spectral features and band gap energies can be correlated to differences in the stoichiometry, crystallinity, and morphology of the TiOx films.* This information is valuable for understanding the potential applications of these materials in areas such as photocatalysis, solar cells, and optoelectronics.