Solar cell and method for manufacturing solar cell
AssigneeKaneka Corporation
InventorsKatsunori KONISHI, Kunta YOSHIKAWA
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Abstract
A solar cell includes a semiconductor substrate; a plurality of band-like first semiconductor layers and a plurality of second semiconductor layers provided alternatively on a back surface side of the semiconductor substrate; a band-like first electrode stacked on the first semiconductor layer and a band-like second electrode stacked on the second semiconductor layer; and a band-shaped or linear insulating body stacked on a back surface of the first semiconductor layer in a region distanced from the first electrode and an edge on a side of the second semiconductor layer.
Claims7
A solar cell comprising:
- a semiconductor substrate;
- a plurality of band-like first semiconductor layers and a plurality of second semiconductor layers configured alternatively on a back surface side of the semiconductor substrate;
- a band-like first electrode stacked on the first semiconductor layer and a band-like second electrode stacked on the second semiconductor layer;
- and
- a band-shaped or linear insulating body stacked on a back surface of the first semiconductor layer in a region distanced from the first electrode and an edge on a side of the second semiconductor layer.
A method of manufacturing a solar cell comprising:
- stacking a first semiconductor layer on a back surface side of a semiconductor substrate;
- stacking a lift-off layer on a back surface side of the first semiconductor layer;
- removing the first semiconductor layer and the lift-off layer in a stripe shape by etching which forms a stripe-like etching mask on a back surface side of the lift-off layer;
- stacking a second semiconductor layer on a back surface of a layered body of a semiconductor substrate, the first semiconductor layer and the lift-off layer;
- removing a central part of the lift-off layer and the second semiconductor layer stacked thereon, in a condition such that leaves a width-direction end of the lift-off layer in a band shape or line shape;
- and
- stacking a first electrode on a back surface of the first semiconductor layer and
- stacking a second electrode on a back surface of the second semiconductor layer.
Dependencies are inferred from the claim text.