Light absorption enhancement in ultra-thin layers for hot-carrier solar cells: first developments towards the experimental demonstration of an enhanced hot-carrier effect with light trapping

2019 ◽  
Author(s):  
Naoya Miyashita ◽  
Julie Goffard ◽  
Zacharie Jehl ◽  
Ryo Tamaki ◽  
Laurent Lombez ◽  
...  
Keyword(s):  
Solar Cells ◽  
Light Absorption ◽  
Light Trapping ◽  
Thin Layers ◽  
Absorption Enhancement ◽  
Experimental Demonstration ◽  
Hot Carrier ◽  
Carrier Effect ◽  
Hot Carrier Effect

Statistical Analysis of Surface Nanopatterned Thin Film Solar Cells Obtained by Inverse Optimization

2013 ◽  
Vol 135 (9) ◽  
Author(s):  
Shima Hajimirza ◽  
John R. Howell
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Light Absorption ◽  
Light Trapping ◽  
Inverse Optimization ◽  
Thin Film Solar Cells ◽  
Solar Irradiation ◽  
Absorption Enhancement ◽  
Metallic Surface ◽  
Fabrication Error

This work is a statistical study of the broadband light absorption in thin film solar cells, enhanced by metallic surface nanotexturing. We consider optimum grating structures on the surface of amorphous silicon solar cells obtained by inverse optimization, and study the joint statistics of the resulting absorption enhancement/spectra in the presence of time and structural variants, such as fabrication error and year around changes in the solar irradiance, as well as the angle of incident. We adopt yearly data for solar irradiation at individual hours. In conjunction with the data for light absorption spectra at various incident angles and random samples of the fabrication error vector, we evaluate the real world performance of optimized solar cells. The resulting conclusions serve as a sensitivity/time analysis for better understanding the limits of performance and robustness of thin film cells and optimal light trapping mechanisms.

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