Structural, morphological, compositional and optical properties of CoS2 thin films synthesized by adsorption-diffusion method

IF 2.4 4区物理与天体物理 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Current Applied Physics Pub Date : 2024-08-21 DOI:10.1016/j.cap.2024.08.004

Klaudija Vaiciukynaite, Skirma Zalenkiene, Ingrida Ancutiene, Remigijus Ivanauskas

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Abstract

CoS₂ thin films on PA 6 sheets were successfully formed by a two-step adsorption-diffusion method. A solution of pentathionate acid and a solution of Co(II) in complex form were used as a source for the formation of cobalt sulfide films. It has been established that increasing the duration of the first stage of the process, as well as increasing the temperature of the Co(II) precursor solution, plays a decisive role on the surface quality and positive physical properties of the resulting CoS₂ films. The surface morphology, physical properties and elemental composition of the obtained CoS₂ films have been investigated by means of XRD, SEM/EDS, ICP-OES and AFM. The formed CoS₂ thin films exhibit a broad absorption edge with a high absorption coefficient (α ≈ 10⁴ cm⁻¹). UV–Vis studies of films have revealed a significant influence of film formation conditions on the values of their optical band gap.

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吸附扩散法合成的 CoS2 薄膜的结构、形态、成分和光学特性

通过两步吸附-扩散法成功地在 PA 6 片材上形成了 CoS2 薄膜。硫化钴薄膜的形成源是戊硫酸溶液和络合物形式的 Co(II) 溶液。实验证明，延长第一阶段工艺的持续时间以及提高 Co（II）前体溶液的温度，对所得 CoS2 薄膜的表面质量和正面物理性质起着决定性作用。通过 XRD、SEM/EDS、ICP-OES 和原子力显微镜研究了所得 CoS2 薄膜的表面形貌、物理性质和元素组成。所形成的 CoS2 薄膜具有较宽的吸收边缘和较高的吸收系数（α ≈ 104 cm-1）。对薄膜进行的紫外可见光研究表明，薄膜形成条件对其光带隙值有显著影响。

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来源期刊

Current Applied Physics 物理-材料科学：综合

CiteScore

4.80

自引率

0.00%

发文量

213

审稿时长

33 days

期刊介绍： Current Applied Physics (Curr. Appl. Phys.) is a monthly published international journal covering all the fields of applied science investigating the physics of the advanced materials for future applications. Other areas covered: Experimental and theoretical aspects of advanced materials and devices dealing with synthesis or structural chemistry, physical and electronic properties, photonics, engineering applications, and uniquely pertinent measurement or analytical techniques. Current Applied Physics, published since 2001, covers physics, chemistry and materials science, including bio-materials, with their engineering aspects. It is a truly interdisciplinary journal opening a forum for scientists of all related fields, a unique point of the journal discriminating it from other worldwide and/or Pacific Rim applied physics journals. Regular research papers, letters and review articles with contents meeting the scope of the journal will be considered for publication after peer review. The Journal is owned by the Korean Physical Society.