Effectiveness and stability of polycrystalline electrodes based on titanium dioxide in the reaction of photoelectrochemical oxidation of water

Photoelectrochemical Properties of Polycrystalline TiO2Thin Film Electrodes on Quartz Substrates

“…If alp << 1 a comparison of Eq. [1] and [8] shows that w/d "-~bEE [9] at this wavelength. Consequently if d can be determined independently, a combination of results of measurements made for the two cases of illumination EE and SE gives information about the depletion layer width.…”

“…Thus w/d (Eq. [8] and [9]) and d (Eq. [10] and [11]) can be estimated from the action spectra if the absorption coefficient is known.…”

“…Rearranging Eq. [8] to In It --w/d I = --am~*W and expanding the left-hand side in a Taylor series (two terms) gives after insertion of Eq. [2] We…”

“…During the last decade much interest has been devoted to TiO2 as a semiconducting photoanode in photoelectrochemical cells with the aim of finding a material suitable for the production of hydrogen from water using light as the energy source. Studies have been performed on single crystals of rutile structure (1)(2)(3)(4)(5)(6)(7) and on polycrystalline material either as a sintered powder (7)(8)(9) or as thin layers of TiO2 films (10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22). Experiments to extend the photoresponse into the visible region by doping have also been reported (6)(7)(8)(9)(10)(11)(12)(13).…”

“…Studies have been performed on single crystals of rutile structure (1)(2)(3)(4)(5)(6)(7) and on polycrystalline material either as a sintered powder (7)(8)(9) or as thin layers of TiO2 films (10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22). Experiments to extend the photoresponse into the visible region by doping have also been reported (6)(7)(8)(9)(10)(11)(12)(13).…”