Effect of pyrolytic temperature on the properties of TiO2/ITO films for hydrogen sensing.
作者： K. Vijayalakshmi , S. David Jereil , K. Karthick
DOI: 10.1016/J.SAA.2014.11.072
关键词: Analytical chemistry 、 Direct and indirect band gaps 、 Substrate (electronics) 、 Phase (matter) 、 Chemistry 、 Anatase 、 Titanium dioxide 、 Raman spectroscopy 、 Thin film 、 Band gap
摘要: Abstract Titanium dioxide (TiO 2 ) thin films were prepared on ITO (2 2 2) coated glass substrates by spray pyrolysis technique. The influence of substrate temperature the orientation, phase, vibrational bands and band gap energy TiO discussed. X-ray diffraction patterns revealed preferentially oriented (1 0 1) anatase phase at 300 °C 350 °C. Fourier transform infrared spectra showed significant sharpening absorption ∼645 cm −1 with increase in temperature, which clearly indicates formation dependent temperature. Raman Spectra presence long range order phase. optical measurements film different temperatures direct 3.15–3.63 eV indirect 3.48–3.73 eV, characteristic To understand enhancement sensing performances gas mechanism towards 400 sccm hydrogen room was studied
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