Flexible Modules Using <70 μm Thick Silicon Solar Cells
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- 作者：André ; Augusto ; Kevin Tyler ; Stanislau Y. Herasimenka ; Stuart G. Bowden
- 关键词：flexible ; module ; silicon ; heterojunction
- 刊名：Energy Procedia
- 出版年：2016
- 出版时间：August 2016
- 年：2016
- 卷：92
- 期：Complete
- 页码：493-499
- 全文大小：371 K
文摘
Highly flexible modules using thin 153 cm2 silicon crystalline cells and transparent fluoropolymer foil are demonstrated. The modules can be flexed 200 times around a bend radius of 4 cm without change in efficiency. The silicon crystalline heterojunction solar cells are 65±5 μm-thick with efficiencies up to 18.4%. Cracks in the solar cells and interconnections that are induced by mechanical stress during module bending are examined using electroluminescence. Two interconnection solutions are discussed: ribbons affixed to the busbars using a conductive adhesive, and indium coated wires directly bonded to the cell fingers. Modules using wire interconnection are found to be highly flexible with efficiencies greatly exceeding existing commercial flexible modules using thin films and have potential applications in light-weight modules for building integrated and portable photovoltaic power.