Patent ID: 11901471
Assignee: PANASONIC HOLDINGS CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 3:
4. The solar cell according to claim 1, further comprising:
a second passivation layer constituted with an amorphous silicon material and provided on a second main surface of the crystalline silicon substrate; and
a second amorphous silicon layer of a second conductivity type provided on a second main surface of the second passivation layer, wherein
the first passivation layer includes atoms of the first conductivity type, and the second passivation layer includes atoms of the second conductivity type,
a concentration of atoms of the first conductivity type in the first passivation layer is lower than 1×1021 atoms/cm3 and lower than a concentration of atoms of the first conductivity type in the first amorphous silicon layer, and
a concentration of atoms of the second conductivity type in the second passivation layer is lower than 1×1021 atoms/cm3 and lower than a concentration of atoms of the second conductivity type in the second amorphous silicon layer.