Potential Improvement in Fill Factor of Lead-Halide Perovskite Solar Cells
Potential Improvement in Fill Factor of Lead-Halide Perovskite Solar Cells
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DOI：
10.1002/solr.201700027
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发表时间：
2017-06-01
期刊：
影响因子：
7.9
通讯作者：
Ohkita, Hideo
中科院分区：
文献类型：
--
作者：
Kim, Hyung Do;Ohkita, Hideo
在这项研究中，铅卤化物钙钛矿太阳能电池的填充因子（FF）的起源进行了讨论的基础上，不同厚度的2，2 '，7，7'-四（N，N-二-对甲氧基苯胺）-9，9-螺二芴（螺-OMe）作为空穴传输层（HTL）。随着HTL的厚度减小，FF增加，因此光伏性能也得到改善。这主要归因于随着HTL厚度减小而减小的串联电阻。FF中的这种改进是基于FF与二极管和光伏参数的经验方程来研究的。因此，该方程可以很好地解释FF随厚度的变化。在此基础上，进一步讨论了FF和PCE的潜在改进。
In this study, the origin of the fill factor (FF) in lead-halide perovskite solar cells is discussed based on different thicknesses of 2,2',7,7'-tetrakis(N,N-di-pmethoxyphenylamine)-9,9-spirobifluorene (spiro-OMeTAD) as the hole-transporting layer (HTL). As the thickness of HTL is decreased, FF increases and hence, the photovoltaic performance is also improved. This is mainly ascribed to the reduced series resistance with decreasing HTL thickness. Such improvement in FF is examined on the basis of an empirical equation for FF with the diode and photovoltaic parameters. As a result, the thickness-dependent FF can be well explained by this equation. The potential improvements in FF and PCE are further discussed on the basis of the empirical equation.