Kesterite materials Cu₂ZnSn(S_xSe_1−x)₄, Cu₂ZnSnS₄ and Cu₂ZnSnSe₄ have received considerable attention as absorber layers for photovoltaic cell applications. But they exhibit efficiencies lower than 12%. In this work, different possible loss mechanisms that affect the solar cell performance are analysed. Numerical investigation is made on the influence of different loss mechanisms such as radiative recombination, presence of traps and defect densities on the performance of the device. A comparative between results on solar cells based on Cu₂ZnSnS₄ and Cu₂ZnSnSe₄ absorber layers is presented. The recombination mechanisms are found to play a vital role in degrading the performance of the solar cell. Additionally, trap centers and density of defect states are distributed to the absorber layer. It is observed that efficiency of the solar cell is severely affected and degraded by 10 % in the presence of defect states.

黄铜矿材料Cu ₂ ZnSn(S _x Se _1-x ) ₄、Cu ₂ ZnSnS ₄和Cu ₂ ZnSnSe ₄作为用于光伏电池应用的吸收层已经受到相当多的关注。但它们的效率低于 12%。在这项工作中，分析了影响太阳能电池性能的不同可能的损耗机制。对辐射复合、陷阱的存在和缺陷密度等不同损耗机制对器件性能的影响进行了数值研究。基于Cu ₂ ZnSnS ₄和Cu _{2 的}太阳能电池的结果比较呈现了ZnSnSe ₄吸收层。发现重组机制在降低太阳能电池的性能方面起着至关重要的作用。此外，陷阱中心和缺陷态密度分布到吸收层。观察到太阳能电池的效率受到严重影响并在存在缺陷状态时降低 10%。