JAXA Repository / AIREX 未来へ続く、宙(そら)への英知
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titleSolar cell R & D activities at ESA
Other TitleSolar cell R & D activities at ESA
Author(jpn)Baur, Carsten
Author(eng)Baur, Carsten
Author Affiliation(jpn)ESA ESTEC
Author Affiliation(eng)European Space Agency European Space Research and Technology Center
Issue Date2008-03-31
PublisherJapan Aerospace Exploration Agency (JAXA)
Publication title第4回宇宙環境シンポジウム講演論文集
Proceedings of the 4th Spacecraft Environment Symposium
Start page20
End page24
Publication date2008-03-31
Abstract3-5 multi-junction solar cells have taken over the lead in today's solar cell market for space. Due to the significantly higher efficiencies and higher radiation hardness the higher manufacturing costs in comparison with silicon solar cells are overcompensated. However, the development of the current state-of-the-art triple-junction solar cell for space applications consisting of the material combination Ga(0.5)In(0.5)P/Ga(0.99)In(0.01)As/Ge has been driven close to its practical efficiency limits of 30 percent. In order to decrease the overall solar array costs further, new concepts have to be developed and investigated. The European Space Agency (ESA) follows different promising approaches which are firstly related to the increase of solar cell efficiencies. In addition, ways to reduce the cell thickness are investigated in order to bring down the specific power given in power/mass. Finally, larger cell areas could lead to cost savings in the integration process of the solar cells onto the panel substrate.
DescriptionJAXA Special Publication
Keywordssolar cell; spacecraft power supply; energy conversion efficiency; quantum efficiency; research and development; photovoltaic effect; European space program; multi-junction solar cell; cost reduction; 太陽電池; 宇宙機給電; エネルギー変換効率; 量子効率; 研究開発; 光電効果; ヨーロッパの宇宙計画; 多接合型太陽電池; 経費削減
Document TypeConference Paper
JAXA Category特別資料
Report NoJAXA-SP-07-030

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