Abstract Significant gains in PEC water splitting photocurrent were recorded using n/n junction bi-layered nano-hetero-structured (BNHS) thin films, ZnO/Ag-(α)Fe2O3, as photoanode. Films, synthesized over ITO (In:SnO2) glass plates, were characterized by X-ray diffractometry, field emission-scanning electron microscopy, atomic force microscopy, UV–visible spectroscopy, energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy and transmission electron microscopy. PEC cell, fabricated through electrical contacting of BNHS films (3% Ag incorporation)/electrolyte (0.1 M NaOH, pH 13, temperature 32 ± 3.6 °C) junction working electrode with platinum counter electrode and saturated calomel reference electrode, yielded nearly 2 and 20 fold increment in photocurrent, against monolayered pristine ZnO and (α)Fe2O3 thin films, respectively. Marked gain in PEC cell-response towards water splitting was attributed to high active surface area and n/n hetero-junction that favored the separation and transfer of photogenerated charge carriers.

中文翻译：

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纳米异质结构薄膜，ZnO/Ag-(α)Fe2O3，具有 n/n 结，作为通过光电化学水分解产生可再生氢的有效光阳极

摘要 使用 n/n 结双层纳米异质结构 (BNHS) 薄膜 ZnO/Ag-(α)Fe2O3 作为光阳极记录了 PEC 水分解光电流的显着增益。在 ITO (In:SnO2) 玻璃板上合成的薄膜通过 X 射线衍射、场发射扫描电子显微镜、原子力显微镜、紫外-可见光谱、能量色散 X 射线光谱、X 射线光电子能谱表征和透射电子显微镜。PEC 电池，通过 BNHS 薄膜（3% Ag 掺入）/电解质（0.1 M NaOH，pH 13，温度 32 ± 3.6 °C）结工作电极与铂对电极和饱和甘汞参比电极的电接触制造，产生近 2 和相对于单层原始 ZnO 和 (α)Fe2O3 薄膜，光电流增加 20 倍。