Kesterite Thin-Film Solar Cell: Role of Grain Boundaries and Defects in Copper–Zinc–Tin–Sulfide and Copper–Zinc–Tin–Selenide,Physica Status Solidi (A) - Applications and Materials Science

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Kesterite Thin-Film Solar Cell: Role of Grain Boundaries and Defects in Copper–Zinc–Tin–Sulfide and Copper–Zinc–Tin–Selenide
Physica Status Solidi (A) - Applications and Materials Science Pub Date : 2021-07-17 , DOI: 10.1002/pssa.202100039
Lingam Sravani ₁ , Soumyaranjan Routray ₂ , Kumar Prasannajit Pradhan ₁ , Maykel Courel Piedrahita ₃

Affiliation

Kesterite materials, such as copper–zinc–tin–sulfide (CZTS) solar cell, have received considerable attention for low-cost and high-efficiency solar cells. However, the material suffers from poor quality of thin film during deposition, which, in turn, creates multiple grain boundaries along the layer. Consequently, a higher density of defects is randomly formed throughout the layer. Herein, the impact of different loss mechanisms on solar cell performance is analyzed. Numerical investigation on the influence of different loss mechanisms such as radiative recombination and recombination through traps and defects on the performance of the device is presented. A remarkable efficiency decrement of 10% in the devices is found due to the presence of defects and grain boundaries.

中文翻译：

Kesterite薄膜太阳能电池：晶界和缺陷在铜-锌-锡-硫化物和铜-锌-锡-硒化物中的作用

Kesterite材料，如铜-锌-锡-硫化物（CZTS）太阳能电池，在低成本和高效率太阳能电池方面受到了相当多的关注。然而，该材料在沉积过程中薄膜质量较差，这反过来又会沿层产生多个晶界。因此，在整个层中随机形成更高密度的缺陷。在此，分析了不同损耗机制对太阳能电池性能的影响。数值研究了辐射复合和通过陷阱和缺陷复合等不同损耗机制对器件性能的影响。由于缺陷和晶界的存在，发现器件的效率显着降低了 10%。

更新日期：2021-08-17

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