Broadband Light Harvesting Enhancement in Thin Film Solar Cells with Surface and Back Reflector Grating Nanostructures

Abstract:

Nanostructures with top subwavelength hybrid dielectric gratings and metallic triangle back reflector in Si thin film solar cells (TFSCs) are introduced in this paper. Compared with the studied light-trapping structures with normal surface and bottom gratings, our optimized structure has a better performance. We can achieve above 26 percent average cell efficiency enhancement in contrast to the normal flat cells and about 40 percent increase with the transverse magnetic (TM) polarized irradiation only.

• Periodical: Advanced Materials Research (Volume 827)
• Pages: 125-130
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.827.125
• Online since: October 2013
• Authors: Wei Zhang, Xiang Yin Li, Li Yong Jiang
• Keywords: Subwavelength Grating, Surface Plasmon Polaritons, Thin Film Solar Cells

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