35% 5-junction space solar cells based on the direct bonding technique

Abstract Multijunction solar cells are the highest efficiency photovoltaic devices yet demonstrated for both space and terrestrial applications. In recent years five-junction cells based on the direct semiconductor bonding technique (SBT), demonstrates space efficiencies >35% and presents applica...

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Bibliographic Details
Published inJournal of semiconductors Vol. 42; no. 12; pp. 122701 - 38
Main Authors Li, Xinyi, Li, Ge, Lu, Hongbo, Zhang, Wei
Format Journal Article
LanguageEnglish
Published Chinese Institute of Electronics 01.12.2021
Shanghai Institute of Space Power-sources,Shanghai 200245,China
Subjects
high efficiency
III–V
multijunction
semiconductor bonding
solar cells
high efficiency
semiconductor bonding
solar cells
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multi junction
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Summary:Abstract Multijunction solar cells are the highest efficiency photovoltaic devices yet demonstrated for both space and terrestrial applications. In recent years five-junction cells based on the direct semiconductor bonding technique (SBT), demonstrates space efficiencies >35% and presents application potentials. In this paper, the major challenges for fabricating SBT 5J cells and their appropriate strategies involving structure tunning, band engineering and material tailoring are stated, and 4-cm 2 35.4% (AM0, one sun) 5J SBT cells are presented. Further efforts on detailed optical managements are required to improve the current generating and matching in subcells, to achieve efficiencies 36%–37%, or above.
ISSN:1674-4926
2058-6140
DOI:10.1088/1674-4926/42/12/122701