Sulfide Chalcopyrite Solar Cells––Are They the Same as Selenides with a Wider Bandgap?
Sulfide Chalcopyrite Solar Cells––Are They the Same as Selenides with a Wider Bandgap?
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硫化物黄铜矿太阳能电池——它们与带隙更宽的硒化物相同吗？
DOI：
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发表时间：
2022
期刊：
影响因子：
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通讯作者：
Aradhana Dwivedi
中科院分区：
文献类型：
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作者：
S. Siebentritt;A. Lomuscio;Damilola Adeleye;Mohit Sood;Aradhana Dwivedi
硫化物黄铜矿太阳能电池重新受到关注，因为它们已达到15%以上的认证效率。由于其较宽的带隙，它们是串联应用中顶部电池的有趣候选者。它们与更深入研究的硒化物黄铜矿有许多共同的性质，但也有一些重要的区别。虽然浅缺陷和深缺陷的结构看起来非常相似，但相图是不同的，其中贫铜CuInS2的存在范围要小得多。在Cu过量下生长的材料的表面的问题特征存在于硫化物和硒化物中。当生长贫铜时，两种材料都显示出增加的尾部状态。为了获得足够大质量的硫化物吸收剂，似乎需要更高的生长温度和更高的钠供应。
Sulfide chalcopyrite solar cells are receiving renewed interest since they have reached a certified efficiency above 15%. Due to their wider bandgap, they are interesting candidates for top cells in tandem applications. They share many properties with the much deeper studied selenide chalcopyrites, but also some important differences. While the structure of shallow and deep defects appears very similar, the phase diagram is different with a much smaller existence range of Cu‐poor CuInS2. The problematic character of the surface of material grown under Cu excess is present in both sulfides and selenides. Both materials show increased tail states when grown Cu‐poor. To achieve sufficient bulk quality of sulfide absorbers, higher growth temperatures and a higher supply of sodium appear to be necessary.