Optoelectronic applications of chemical bath deposited Cu2SnS3 (CTS) thin films†

IF 4.6 3区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

RSC Advances Pub Date : 2025-07-11 DOI:10.1039/D5RA03157E

Jolly B. Raval, Sunil H. Chaki, Jiten P. Tailor, Sandip V. Bhatt, Sefali R. Patel, Rahul K. Desai, Bishwajit S. Chakrabarty and Milind P. Deshpande

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Abstract

Cu₂SnS₃ (CTS) thin film (TF) is deposited by a low-cost chemical bath deposition method. The wurtzite unit cell structure of deposited CTS TF is confirmed by X-ray diffraction analysis. The atomic force microscopy shows uniform and defect-free deposition of CTS TF. The direct optical bandgap of 1.48 eV is confirmed by diffuse reflectance spectroscopy. The deposited CTS TF is studied for photo-response properties. Responsivity, sensitivity, and detectivity of 5.73 mW A⁻¹, 114.27 × 10⁻³, and 6.39 × 10¹² Jones are obtained respectively. In another application, the first ever heterojunction and a photo-electrochemical (PEC) type CTS-TiO₂ configuration within a single solar cell device is carried out. This CTS-TiO₂ based combined solar cell delivered a current density of 0.05 mA cm⁻², open circuit voltage of 0.47 V, efficiency of 0.014%, and fill factor of 0.63. Theoretical predictions of solar cell parameters for the CTS-CdX (X = S, Se) heterojunction device are carried out using SCAPS-1D simulation. Temperature-dependent thickness variations at 273, 298, 310, and 373 K are carried out to evaluate the device performance. The obtained results are discussed in detail.

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化学浴沉积Cu2SnS3 （CTS）薄膜的光电应用

采用低成本的化学浴沉积法沉积Cu2SnS3 （CTS）薄膜。通过x射线衍射分析证实了CTS TF的纤锌矿单晶结构。原子力显微镜观察到CTS TF的沉积均匀、无缺陷。漫反射光谱证实了直接光学带隙为1.48 eV。研究了沉积的CTS TF的光响应特性。得到的响应度、灵敏度和探测率分别为5.73 mW A−1、114.27 × 10−3和6.39 × 1012 Jones。在另一个应用中，首次在单个太阳能电池器件中实现了异质结和光电化学（PEC）型CTS-TiO2结构。该CTS-TiO2复合太阳能电池电流密度为0.05 mA cm−2，开路电压为0.47 V，效率为0.014%，填充系数为0.63。利用SCAPS-1D模拟对CTS-CdX （X = S, Se）异质结器件的太阳电池参数进行了理论预测。在273、298、310和373 K下进行温度相关的厚度变化，以评估器件性能。对所得结果进行了详细的讨论。

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来源期刊

RSC Advances chemical sciences-

CiteScore

7.50

自引率

2.60%

发文量

3116

审稿时长

1.6 months

期刊介绍： An international, peer-reviewed journal covering all of the chemical sciences, including multidisciplinary and emerging areas. RSC Advances is a gold open access journal allowing researchers free access to research articles, and offering an affordable open access publishing option for authors around the world.