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Proceedings Paper • new

Silicon periodic nanostructures for high efficiency absorption in thin film solar cells
Author(s): Xiaowei Guo; Hengchang Lu; Guolin Luo; Cheng Yang; Shaorong Li
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Paper Abstract

Enhancing the light absorption in ultrathin-film silicon solar cells is important for improving efficiency and reducing cost. In this paper, we report a highly effecient cosine periodic nanostructure as light trapping texture. The design and fabrication as well as measurement of cosine nanotextures were presented. The optimized structure yields an average reflectance of 7.07% at an equivalent silicon thickness of 10μm, much better than planar and random pyramid structures. The measurements demonstrate that the absorptions in ultrathin film solar cells are very close to the Yablonovitch limit for the entire solar spectrum and insensitive to the angle of the light. This approach is applicable to various thicknesses and promising in future glass-based thin film solar cells.

Paper Details

Date Published: 16 February 2018
PDF: 6 pages
Proc. SPIE 10527, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices VII, 1052716 (16 February 2018); doi: 10.1117/12.2301294
Show Author Affiliations
Xiaowei Guo, Univ. of Electronic Science and Technology of China (China)
Hengchang Lu, Univ. of Electronic Science and Technology of China (China)
Guolin Luo, Univ. of Electronic Science and Technology of China (China)
Cheng Yang, Univ. of Electronic Science and Technology of China (China)
Shaorong Li, Univ. of Electronic Science and Technology of China (China)


Published in SPIE Proceedings Vol. 10527:
Physics, Simulation, and Photonic Engineering of Photovoltaic Devices VII
Alexandre Freundlich; Laurent Lombez; Masakazu Sugiyama, Editor(s)

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