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Space Fresnel lens concentrator modules with triple-junction solar cells

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8 Author(s)
Shvarts, M.Z. ; Ioffe Physico-Technical Inst., St. Petersburg, Russia ; Chosta, O.I. ; Grilikhes, V.A. ; Rumyantsev, V.D.
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The work presented in this paper is concerned with fabrication of an improved concentrator module based on linear Fresnel lenses and photoreceivers with GalnP/GaAs/Ge triple junction (TJ) cells. The manufactured module consists of: four linear Fresnel lenses with focal distance of 30 mm and dimensions of 2.5×10 cm2 each; four linear photoreceivers of 10 cm in length with 12 TJ solar cells each; heat sink made of thin copper metallized dielectric plate. Linear Fresnel lenses with optical efficiency of 82-84% were made of silicone formed on shockproof radiation-resistant UV-protective glass 0.2 mm thick. The solar cells intended for use in linear receivers have efficiencies of 23-24% (AM0, 25 °C) at geometrical sunlight concentration of 6-9×. The estimated module efficiency is about 21% (AM0).

Published in:

Photovoltaic Specialists Conference, 2005. Conference Record of the Thirty-first IEEE

Date of Conference:

3-7 Jan. 2005

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