Vibrational properties of the mechanochemically synthesized Cu2SnS3: Raman study,Journal of Raman Spectroscopy

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Vibrational properties of the mechanochemically synthesized Cu2SnS3: Raman study
Journal of Raman Spectroscopy ( IF 2.4 ) Pub Date : 2022-02-05 , DOI: 10.1002/jrs.6318
J. Trajic ₁ , M. Curcic ₁ , M. Casas Luna ₂ , M. Romcevic ₁ , M. Remesova ₂ , M. Balaz ₃ , L. Celko ₂ , K. Dvorek ₄ , N. Romcevic ₁

Affiliation

Cu₂SnS₃ (CTS) is a simple and promising material for solar cells. Various physical and chemical techniques have been employed for synthesis of CTS nanocrystals among which mechanochemical synthesis is a great alternative due to its simplicity, solvent-free character, and reproducibility. We present the analysis of the vibration properties of mechanochemically synthesized CTS nanocrystals. The milling time influence on CTS synthesis from elemental precursors Cu, Sn, and S was observed. The scanning electron microscopy (SEM), X-ray diffraction (XRD), and Raman spectroscopy was used to characterize the crystal structure and compositional purity of the obtained nanoparticles. In order to investigate the individual steps of the synthesis, samples obtained after 15 s and 5, 10, 15, and 30 min of milling time were analyzed. The detailed analysis of the Raman spectra has allowed us to determine the wavenumber of the main and weaker peaks, and discern the phase, crystal structure, and secondary phases. The formation of monoclinic and tetragonal CTS phases, with oxidized surface (due to milling in air) was confirmed.

中文翻译：

机械化学合成的 Cu2SnS3 的振动特性：拉曼研究

Cu ₂ SnS ₃(CTS) 是一种简单而有前途的太阳能电池材料。各种物理和化学技术已被用于合成 CTS 纳米晶体，其中机械化学合成因其简单、无溶剂特性和可重复性而成为一种很好的替代方法。我们对机械化学合成的 CTS 纳米晶体的振动特性进行了分析。观察到研磨时间对元素前体 Cu、Sn 和 S 合成 CTS 的影响。扫描电子显微镜 (SEM)、X 射线衍射 (XRD) 和拉曼光谱用于表征所得纳米颗粒的晶体结构和组成纯度。为了研究合成的各个步骤，分析了 15 秒和 5、10、15 和 30 分钟研磨时间后获得的样品。拉曼光谱的详细分析使我们能够确定主峰和较弱峰的波数，并辨别相、晶体结构和次相。确认了单斜和四方 CTS 相的形成，具有氧化的表面（由于在空气中研磨）。

更新日期：2022-02-05

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