Nanoporous yellow tungsten oxide film has become well-known because nanoporous yellow tungsten oxide has photoelectrochemical characteristics. And the nanoporous yellow tungsten oxide film is often more commonly known as nanoporous tungsten trioxide film or nanoporous WO3 film. Some experts have studied the photoelectrochemical properties of highly transparent nanoporous WO3 films.
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The results showed that the photocurrent versus excitation wavelength spectra of these photoelectrodes exhibit a maximum close to 400 nm and a significant photoresponse to the blue part of the visible spectrum. The observed conversion efficiencies attain 75% for the photogeneration of oxygen from 1 M aq HClO4 and reach 190% in the presence of methanol in the solution, denoting in the latter case the occurrence of a perfect photocurrent doubling. Experiments conducted under simulated solar AM 1.5 illumination resulted in steady-state anodic photocurrents of the order of several mA/cm2.
