Characterization and hydrogen gas sensing properties of TiO2 thin films prepared by sol–gel method

Synthesis and characterization of ZnO/TiO2 composite core/shell nanorod arrays by sol–gel method for organic solar cell applications

“…It is seen that the resistance values are in the range of 10 6 which is lower than the values that have been reported in the literature for the sol-gel derived TiO 2 thin films. 24 Meanwhile, we have arranged a comparison between the electrical and optical properties of ZnO/TiO 2 core/shell and bare TiO 2 thin films. To do that, a flat TiO 2 film was deposited on ITO substrate by the sol-gel dip-coating method.…”

Investigating the influence of Al-doping and background humidity on NO<sub>2</sub> sensing characteristics of magnetron-sputtered SnO<sub>2</sub> sensors

“…It is generally accepted that during heating processes, oxygen is adsorbed on the surface of metal oxides in its molecular O − 2 form (T w < 150 • C) and atomic O − /O 2− forms (T w > 150 • C) (Zakrzewska, 2003;Haidry et al, 2012a). However, as metal-oxide sensors operate at temperatures …”

Flexible highly sensitive hydrogen gas sensor based on a TiO2 thin film on polyimide foil

“…The high response of the presented sensor in dry conditions, which is markedly higher and acquired at lower temperatures compared to typical values obtained on similar hydrogen sensors on rigid substrates [28], [29], is a combination of all of the above mentioned factors, together with higher roughness (compared to e.g. silicon, glass or sapphire) of the polyimide foil, which enlarges the active surface of the sensing layer and thus leads to higher sensitivity…”