| 摘要 |
PROBLEM TO BE SOLVED: To make a solar cell hard to break and thus improve the yield even when a thin crystal silicon substrate is used by separating connection tabs for electrically connecting a surface member and a back member from each other, and providing a plurality of connection portions which form a connection surface to the solar cell. SOLUTION: A solar cell comprising a crystal silicon substrate is made thin due to demand for cost reduction and is easy to break. Connection tabs 2 for connecting a plurality of solar cells 1 are separated from one another and a plurality of connection portions 2A having flat surfaces which form contact surfaces to the solar cells 1 are provided on bus-bar portions 13 and back electrodes 14 and are coupled together by link portions 2B raised from the contact surfaces to the solar cells so as to be apart therefrom. Accordingly, each connection tab 2 is connected to the solar cell 1 at a plurality of connection surfaces of small areas, therefore, the stress generated by thermal-expansion which is applied to the solar cells 1 is reduced, thus suppressing breaking of the solar cells 1. |
