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Polycrystalline WO3 and Ga:WO3 thin films are synthesized by spray pyrolysis technique. The photoelectrochemical (PEC) performance of PEC cell composed with WO3 and Ga:WO3 films are tested in 0.01M HClO4. Optimized 2at.% Ga:WO3 photoelectrode exhibits a high photocurrent density (Iph=1.251mA/cm2 at 1.5V/SCE) which is 1.97 times greater than that of WO3 thin film. X-ray diffraction (XRD) and FT-Raman...
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