Cu₂SnS₃ is a promising absorber for green thin film solar cells because of its suitable optoelectrical properties and environment friendly components. In this study, CTS films were prepared by sulphurization of stacked metallic precursors deposited by thermal evaporation. Some physical properties were investigated by changing the amount of sulphur used in sulphurization stage. Highly crystalline tetragonal-CTS phase was obtained for all samples. However, Cu₃SnS₄ and CuS secondary phases were also determined at low amounts. Cu/Sn ratio approached to desired stoichiometry of CTS with increasing sulphur amount. Absorption spectra showed that there are two discrete absorption regions that are related to tetragonal-CTS and secondary phases. Thickness and optical constants were determined using spectroscopic ellipsometry. Atomic force microscope was used to evaluate the effects of sulphur amount on the morphology of CTS films. As a result, this study suggests a way of minimizing the secondary phases to obtain single phase tetragonal CTS.

Cu ₂ SnS ₃由于其合适的光电性能和环保组件而成为绿色薄膜太阳能电池的有前途的吸收剂。在这项研究中，通过对通过热蒸发沉积的堆叠金属前驱体进行硫化来制备CTS膜。通过改变硫化阶段中使用的硫量，研究了一些物理性质。所有样品均获得高度结晶的四方CTS相。但是，Cu ₃ SnS ₄CuS次生相的含量也很低。随着硫含量的增加，Cu / Sn比接近CTS的理想化学计量。吸收光谱表明，存在两个与四方CTS和次生相有关的离散吸收区域。厚度和光学常数使用光谱椭圆偏振法测定。原子力显微镜用于评估硫含量对CTS膜形貌的影响。结果，该研究提出了一种最小化次级相以获得单相四边形CTS的方法。