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A series of Zn2+ and W6+ doped tin oxide (SnO2) thin films with various dopant concentrations were prepared by spray pyrolysis deposition, and were characterized by X-ray diffraction, atomic force microscopy, contact angle, absorbance, current density–voltage (J–V) and photocurrent measurements. The results showed that W6+ doping can prevent the growth of nanosized SnO2 crystallites. When Zn2+ ions...
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