Solar cell, solar cell module, and manufacturing method for solar cell

A manufacturing method for a solar cell, the method comprising:

• preparing a photoelectric converter which includes a light receiving surface and a back surface opposed to the light receiving surface and has n-type regions and p-type regions alternately arranged in a first direction on the back surface;
• forming a groove which is extended in the first direction on the light receiving surface after an electrode layer is formed on the n-type region and the p-type region;
• and
• dividing the photoelectric converter into a plurality of sub-cells along the groove.

A solar cell module comprising:

• a plurality of solar cell modules;
• and
• a wiring material that connects the plurality of solar cells to each other, wherein
• the solar cell includes a photoelectric converter which includes a light receiving surface and a back surface opposed to the light receiving surface and has n-type regions and p-type regions which are alternately arranged in a first direction on the back surface and an electrode layer which is provided on the n-type region and the p-type region,
• the photoelectric converter includes a plurality of sub-cells arranged in a second direction intersecting with the first direction and an isolation region provided on a boundary between adjacent sub-cells,
• the electrode layer includes an n-side electrode which is provided on the n-type region in the sub-cell at an end of the plurality of sub-cells, a p-side electrode which is provided on the p-type region in the sub-cell at the other end, and a sub-electrode which is provided over two adjacent sub-cells,
• the sub-electrode connects the n-type region which is provided in one sub-cell of the two adjacent sub-cells to the p-type region which is provided in the other sub-cells, and
• the wiring material connects the n-side electrode of one solar cell of adjacent solar cells to the p-side electrode of the other solar cell.

A solar cell comprising:

• a photoelectric converter that has n-type regions and p-type regions alternately arranged in a first direction on a principal surface;
• and
• an electrode layer that is provided on the principal surface,
• wherein
• the photoelectric converter includes a plurality of sub-cells arranged in a second direction intersecting with the first direction and an isolation region which is provided on a boundary between adjacent sub-cells,
• the electrode layer includes an n-side electrode which is provided on the n-type region in the sub-cell at an end of the plurality of sub-cells, a p-side electrode which is provided on the p-type region in the sub-cell at the other end, and a sub-electrode which is provided over two adjacent sub-cells,
• the sub-electrode includes an n-side part which is provided on the n-type region in one sub-cell of the two adjacent sub-cells, a p-side part which is provided on the p-type region in the other sub-cell, and a connection part which is provided between the n-side part and the p-side part, and
• the connection part is extended in a direction intersecting with the first and second directions in the isolation region.

A solar cell module comprising:

• a plurality of solar cells;
• and
• a wiring material that connects the plurality of solar cells to each other, wherein
• a solar cell includes a photoelectric converter which has n-type regions and p-type regions alternately arranged in a first direction on a principal surface and an electrode layer which is provided on the principal surface,
• the photoelectric converter includes a plurality of sub-cells arranged in a second direction intersecting with the first direction and an isolation region which is provided on a boundary between adjacent sub-cells,
• the electrode layer includes an n-side electrode which is provided on the n-type region in the sub-cell at an end of the plurality of sub-cells, a p-side electrode which is provided on the p-type region in the sub-cell at the other end, and a sub-electrode which is provided over two adjacent sub-cells,
• the sub-electrode includes an n-side part which is provided on the n-type region in one sub-cell of the two adjacent sub-cells, a p-side part which is provided on the p-type region in the other sub-cell, and a connection part which is provided between the n-side part and the p-side part, and
• the connection part is extended in a direction intersecting with the first and second directions in the isolation region.