Data for the article entitled: "WO3 Thin-Film Optical Gas Sensors Based on Gasochromic Effect towards Low Hydrogen Concentrations"

Files include the data presented in the manuscript entitled: "WO3 Thin-Film Optical Gas Sensors Based on Gasochromic Effect towards Low Hydrogen Concentrations", by Mazur et al., https://doi.org/10.3390/ma16103831Fig. 1 presents X-ray diffraction patterns of WO3 thin films annealed at various temperatures.Fig. 3 presents results of transmission spectra of WO3 thin films annealed at various temperatures.Fig. 4 presents Tauc plots of WO3 thin films annealed at various temperatures with calculated optical energy band gaps.Fig. 5 presents comparison of average transmission in the visible wavelength range, fundamental absorption edge, and optical band gap energies of WO3 thin films annealed at various temperatures.Fig. 6 presents transmission spectra during colouring of WO3 thin films annealed at 473 K (Fig. 6a), 573 K (Fig. 6b) and 673 K (Fig. 6c) upon exposure to 200–1000 ppm H2.Fig. 7 presents variation in transmittance at 600 nm, 800 nm, and 900 nm during colouring/bleaching cycles of WO3 thin films annealed at 473 K (Fig. 7a), 573 K (Fig. 7b) and 673 K (Fig. 7c) upon exposure to 200–1000 ppm H2.Fig. 8 presents transmission spectra during colouring of WO3 thin film annealed at 673 K upon exposure to H2 concentrations of 25 ppm to 1000 ppm.Fig. 9 presents variation in transmittance at 600 nm, 800 nm, and 900 nm during colouring/bleaching cycles of WO3 thin film annealed at 673 K upon exposure to H2 concentrations of 25 to 1000 ppm.Fig. 10 presents Variation in extinction coefficient in time during colouring of WO3 thin film annealed at 673 K upon exposure to H2 concentration of: 25 ppm (Fig. 10a) and 1000 ppm (Fig. 10b).Fig. 11 presents Electron concentration in the function of time of the colouring cycle of WO3 thin film annealed at 673 K calculated based on the results of the extinction coefficient.