The kesterite Cu₂ZnSnS₄ (CZTS) thin-film solar cell is one of the emerging solar cells. The Zn and Sn materials were prepared to substitute the rare In and Ga materials in previous CuInGaS₂ cell generation. However, the secondary phase formation and the non-uniform film formation during the solution process affect deteriorating cell performance. By considering the CZTS kesterite structure, secondary phases, bandgap, and absorbance, this work aims to present the novel achievement of solution processed-pure Cu₂ZnSnS₄/CdS solar cell. The solar cell was made with the structure of Mo/Cu₂ZnSnS₄/CdS/ITO/Ag consisting of 21 subcells. The characterizations were employed through X-ray diffraction (XRD), external quantum efficiency, energy gap, and J-V curve. To the best knowledge, without further cation exchange modification and the atomic ratio of Zn/Sn = 1.26 and Cu/(Zn + Sn) = 0.86, the fabricated solar cell exhibits the novel achievement for the pure Cu₂ZnSnS₄/CdS standard solution process with the power conversion efficiency of 7.5% with 1.43 eV bandgap and 83.5% external quantum efficiency at 570 nm. The correlation between kesterite, secondary phases, bandgap, absorbance, dan cell performance statistics were further discussed. This work implied considering the atomic ratio of Cu-poor, Zn-rich, and the film uniformity during the spin coating process; it plays a significant role in achieving high-performance solution-processed CZTS solar cells.

Kesterite Cu ₂ ZnSnS ₄（CZTS）薄膜太阳能电池是新兴的太阳能电池之一。制备了Zn和Sn材料，以替代先前的CuInGaS ₂电池中的稀有In和Ga材料。但是，在固溶过程中第二相的形成和不均匀的膜形成会影响电池性能的恶化。通过考虑CZTS硅藻土的结构，第二相，带隙和吸收率，这项工作旨在提出固溶处理的纯Cu ₂ ZnSnS ₄ / CdS太阳能电池的新成果。用Mo / Cu ₂ ZnSnS ₄结构制造太阳能电池/ CdS / ITO / Ag包含21个子单元。通过X射线衍射（XRD），外部量子效率，能隙和JV曲线进行表征。据我们所知，无需进一步进行阳离子交换修饰，Zn / Sn = 1.26和Cu /（Zn + Sn）= 0.86的原子比，所制得的太阳能电池就获得了纯Cu ₂ ZnSnS ₄的新颖成果。/ CdS标准溶液工艺，功率转换效率为7.5％，带隙为1.43 eV，570 nm处的外部量子效率为83.5％。进一步讨论了钾长石，次生相，带隙，吸光度，单核细胞性能统计之间的相关性。这项工作意味着要考虑旋涂过程中贫铜，富锌的原子比和薄膜均匀性。它在实现高性能溶液处理的CZTS太阳能电池中发挥着重要作用。