Accurate Calculation of the Absorptance Enhances Efficiency Limit of Crystalline Silicon Solar Cells With Lambertian Light Trapping
Accurate Calculation of the Absorptance Enhances Efficiency Limit of Crystalline Silicon Solar Cells With Lambertian Light Trapping
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DOI：
10.1109/jphotov.2018.2824024
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发表时间：
2018-07-01
影响因子：
3
通讯作者：
Brendel, Rolf
中科院分区：
文献类型：
--
作者：
Schaefer, Soeren;Brendel, Rolf
对于110 μ m厚的晶体硅太阳能电池，采用弱吸收近似法计算了在1个太阳下朗伯光捕获的限制效率为29.43%。然而，短路电流密度增加了0.17 mA/cm（2）时，一个理想的朗伯光捕获方案的光学吸收率准确建模。由此产生的新的1-太阳效率极限为29.56%，并适用于厚度为98.1 μ m的电池。
The widely accepted limiting efficiency for crystalline silicon solar cells with Lambertian light trapping under 1 sun was previously calculated to he 29.43% for a 110-mu m-thick device by using the commonly applied weak absorption approximation for light trapping. However, the short-circuit current density increases by 0.17 mA/cm(2) when modeling the optical absorptance of an ideal Lambertian light trapping scheme exactly. The resulting new 1-sun efficiency limit is 29.56% and holds for a cell that is 98.1 mu m in thickness.