Abstract In this work, Ag:ZnO thin films have been prepared by spraying a mixture of zinc acetate dehydrate and silver nitrate precursors on (ITO)-coated glass substrates at optimized conditions of substrate temperature and a solution concentration. In the current study, we show the effect of Ag doping on the morphological and photoelectrochemical properties of ZnO thin films. The SEM observations exhibit indeed a low change in the size of the surface crystallite after doping. For instance, we have investigated the silver doping effect on the electrochemical behavior taking place at the ZnO/electrolyte interface. The interface has been modeled as an equivalent circuit consisting of a parallel charge transfer resistance RCt and a constant phase element (CPE) in series with a resistance of electrolyte RS. An optimization of the doping percentage has shown that the ZnO photoanode doped with 2% Ag gives the best photoelectrochemical performances.

中文翻译：

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Ag掺杂ZnO薄膜的喷雾热解表征及其在增强光电化学性能中的应用

摘要 在这项工作中，通过在优化的基板温度和溶液浓度条件下，将脱水乙酸锌和硝酸银前驱体的混合物喷涂在 (ITO) 涂层玻璃基板上，制备了 Ag:ZnO 薄膜。在目前的研究中，我们展示了 Ag 掺杂对 ZnO 薄膜的形态和光电化学性能的影响。SEM 观察显示掺杂后表面微晶尺寸的变化确实很小。例如，我们研究了银掺杂对 ZnO/电解质界面处发生的电化学行为的影响。该界面被建模为等效电路，由并联电荷转移电阻 RCt 和与电解质 RS 电阻串联的恒定相位元件 (CPE) 组成。