SOLAR BATTERY ELEMENT AND MODULE THEREOF

摘要

PROBLEM TO BE SOLVED: To prevent peeling of a semiconductor substrate and an electrode due to a difference in a heat shrink rate between the electrode and an inner lead and peeling of the electrode and the inner lead when the electrode and the inner lead of a solar battery element are thermally welded.

SOLUTION: A plurality of finger electrodes 7 and 9 are disposed on both sides of the semiconductor substrate 1 having pn junction. Band-like bus bar electrodes 6 and 8 connecting the finger electrodes 7 and 9 are disposed. The bus bar electrode 8 on the rear side is disposed in such a way that a center line of a longitudinal direction is not overlapped with a center line in a longitudinal direction of the bus bar electrode 6 on the surface side. The inner lead 12 is connected to the bus bar electrode 6 on the surface side and the finger electrode 9 on the backside.

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