Novel multi-spray approach for preparing Cu₂ZnSnS₄ films for efficient solar photoelectrochemical water splitting

IF 2.4 3区化学 Q4 CHEMISTRY, PHYSICAL

Chemical Physics Pub Date : 2025-08-12 DOI:10.1016/j.chemphys.2025.112894

Ahmed Saoudi , Yazid Bouznit , Fathi Chouikh , Gerard Leroy

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Abstract

In this paper, a novel multi-spray approach was adopted and optimized to prepare high quality Cu₂ZnSnS₄ films. To achieve the Cu₂ZnSnS₄ phase under optimized conditions using this technique, a series of samples with different Cu:Zn:Sn:S atomic ratios were prepared and investigated using various characterization methods. X-ray diffraction (XRD) analysis indicated that the crystalline quality was strongly dependent on the Cu:Zn:Sn:S atomic ratios. In all cases, a pure Cu₂ZnSnS₄ kesterite phase structure with (112) orientation was obtained. All prepared films exhibited low transmittance (approximately 30 %) in the visible region. Electrochemical photocurrent tests showed that the films presented a cathodic photocurrent, thus confirming the p-type conductivity of the prepared films. Films deposited using a solution with the stoichiometric composition (Cu₂ZnSnS₄) exhibited excellent structural, morphological and electrochemical properties, with photocurrent density reaching up to 6 mA/cm².

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新型多喷雾制备Cu₂ZnSnS₄膜的高效太阳能光电化学水分解方法

本文采用并优化了一种新型的多喷法制备高质量Cu2ZnSnS4薄膜。为了在优化条件下获得Cu2ZnSnS4相，制备了一系列不同Cu:Zn:Sn:S原子比的样品，并采用各种表征方法对其进行了研究。x射线衍射（XRD）分析表明，晶体质量与Cu:Zn:Sn:S原子比密切相关。在所有情况下，获得了具有（112）取向的纯Cu2ZnSnS4 kesterite相结构。所有制备的薄膜在可见光区具有较低的透光率（约30%）。电化学光电流测试表明薄膜呈现阴极光电流，从而证实了所制备薄膜的p型电导率。采用Cu2ZnSnS4溶液沉积的薄膜具有优异的结构、形态和电化学性能，光电流密度可达6 mA/cm2。

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来源期刊

Chemical Physics 化学-物理：原子、分子和化学物理

CiteScore

4.60

自引率

4.30%

发文量

278

审稿时长

39 days

期刊介绍： Chemical Physics publishes experimental and theoretical papers on all aspects of chemical physics. In this journal, experiments are related to theory, and in turn theoretical papers are related to present or future experiments. Subjects covered include: spectroscopy and molecular structure, interacting systems, relaxation phenomena, biological systems, materials, fundamental problems in molecular reactivity, molecular quantum theory and statistical mechanics. Computational chemistry studies of routine character are not appropriate for this journal.