Optical Design of Spherical Silicon Solar Cells with Reflector Cup
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概要
- 論文の詳細を見る
A short-circuit current density ($J_{\text{sc}}$) of a spherical Si solar cell with a reflector cup has been calculated as a function of light concentration ratio, defined as the aperture area of the reflector cup divided by the projection area of the spherical Si solar cell, and incidence angle using a three-dimensional ray-tracing simulation. The calculation results show that the $J_{\text{sc}}$ values of 39.7, 38.4, and 38.1 mA/cm2 can be obtained with the light concentration ratios of 4, 6, and 8, respectively, indicating that a higher concentration ratio reduces the optical efficiency of the reflector. Also, these results indicate that $J_{\text{sc}}$ approaching 40 mA/cm2 can be realized without surface texturing in the spherical Si solar cell. Even in a high light concentration ratio of 8, a relatively high $J_{\text{sc}}$ exceeding 37 mA/cm2 can be obtained for the incidence angles of 0–10°, indicating that the amount of spherical Si can be reduced effectively by the reflector cup.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2006-05-15
著者
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MINEMOTO Takashi
College of Science and Engineering, Ritsumeikan University
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TAKAKURA Hideyuki
College of Science and Engineering, Ritsumeikan University
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HAMAKAWA Yoshihiro
College of Science and Engineering, Ritsumeikan University
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Ikuta Tomohiro
College Of Science And Engineering Ritsumeikan University
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Minemoto Takashi
College of Science and Engineering, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan
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Takakura Hideyuki
College of Science and Engineering, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan
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Ikuta Tomohiro
College of Science and Engineering, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan
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