Texturing, i.e., preferentially oriented deposition of a film with a specific crystallographic direction, enables the manipulation of the charge transport properties and surface reactivity of photoelectrodes for solar water-splitting. The advancement of solar water-splitting systems under neutral conditions is a vital strategy to reduce the economic and ecological traits of the prevailing strong acid or alkaline-based solar water-splitting systems. However, the photoelectrodes have to endure cumulative barriers in neutral media to convalesce the performance of the neutral solar water-splitting system. The implication of texturing in materials enforces the synergistic effect that is essential to confine the barriers to improve the performance of the photoelectrodes in eco-friendly neutral pH conditions. Here, we synthesized tungsten trioxide (WO₃) films to achieve a columnar-type nanostructure with (0 2 0) texture, through a laser ablation deposition. Specifically, we modulated both deposition temperature and working pressure, enabling the (0 2 0) textured deposition of films, as well as the fine-tuning of the surface morphology. With optimized fabrication conditions, the (0 2 0)-textured WO₃ film (thickness: 3.6 µm) showed improved photoelectrochemical water-oxidation performance, and the photocurrent density was ~3 mA/cm² at 1.23 V versus reversible hydrogen electrode in an economic and ecological neutral condition. The WO₃ films were further characterized using various methods, namely a UV–Vis spectroscopy, X-ray photoelectron spectroscopy (XPS), and Hall Effect measurements. Based on the measured film characteristics, we attributed enhanced charge transport and transfer characteristics to the (0 2 0)-texturing, and the formation of the optimal amount of oxygen vacancies.

纹理化，即例如，具有特定晶体学方向的膜的优选定向沉积，使得能够控制用于太阳能水分解的光电极的电荷传输性质和表面反应性。在中性条件下发展太阳能水分解系统是减少普遍存在的基于强酸或碱的太阳能水分解系统的经济和生态特性的重要战略。但是，光电极必须承受中性介质中的累积势垒，才能恢复中性太阳能水分解系统的性能。材料中纹理化的含义增强了协同效应，这对于限制势垒以改善在环保的中性pH条件下光电极的性能至关重要。在这里，我们合成了三氧化钨（WO₃）通过激光烧蚀沉积获得具有（0 2 0）织构的柱状纳米结构的膜。具体来说，我们既调节了沉积温度，又调节了工作压力，从而实现了薄膜的（0 2 0）织构化沉积以及表面形态的微调。在优化的制造条件下，具有（0 2 0）织构的WO ₃膜（厚度：3.6 µm）显示出改进的光电化学水氧化性能，并且在1.23 V下，光电流密度为〜3 mA / cm ²，与可逆氢电极相比经济和生态中立条件。WO ₃使用各种方法对膜进行进一步表征，包括紫外可见光谱，X射线光电子能谱（XPS）和霍尔效应测量。基于测得的薄膜特性，我们将增强的电荷传输和转移特性归因于（0 2 0）纹理，并形成了最佳数量的氧空位。