期刊
IEEE JOURNAL OF PHOTOVOLTAICS
卷 8, 期 4, 页码 1156-1158出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JPHOTOV.2018.2824024
关键词
Efficiency limit; photon recycling; silicon; solar cell
资金
- Federal Ministry for Economic Affairs and Energy [FKZ 0325827A (26+)]
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.
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