Solar cell and solar cell assembly
First Claim
1. A solar cell assembly including at least two interconnectable solar cells, wherein:
- each said at least two interconnectable solar cell comprising;
a semiconductor substrate having a substrate front surface and a substrate rear surface;
a first p-n-junction provided in the substrate close to and below the substrate front surface, the first p-n-junction separating the substrate into a substrate front portion having a first doping and a substrate rear portion having a second doping;
a front layer comprising a further p-n-junction provided on the substrate front surface of the substrate, the further p-n-junction separating the front layer into a further front portion having the first doping and a further rear portion having the second doping, the further front portion being separated from the substrate front portion;
at least one first electric contact being provided on a front side of the solar cell that is electrically connected to the further front portion;
at least one second electric contact being provided on a rear side of the solar cell that is electrically connected to at least one contact point provided on the front side of the solar cell;
the at least one contact point being placed on a bottom surface of a groove formed in the substrate that opens to the front side of the solar cell and which extends to the substrate rear portion;
an electrical connection between the at least one second electric contact and the at least one contact point being provided by the substrate rear portion; and
a cover glass being provided on a front surface of the front layer of each said solar cell, wherein each said cover glass is provided with cut-outs located at positions of the at least one contact point;
the solar cell assembly comprising;
the at least two solar cells arranged adjacent each other to form a row of solar cells, the at least two solar cells comprising at least a first and a second solar cell;
first and second electric contact pads for respective first and second electric contacts for each solar cell, wherein a first electric contact pad of the first solar cell is positioned adjacent to a second electric contact pad of the second solar cell and a second electric contact pad of the first solar cell is positioned adjacent to a first electric contact pad of the second solar cell; and
interconnectors being arranged to connect each first electric contact pad of the first solar cell with the adjacent second electric contact pad of the second solar cell and to connect each second electric contact pad of the first solar cell with the adjacent first electric contact pad of the second solar cell,wherein each interconnector is sized so that, between the adjacent first solar cell and the second solar cell, the interconnector is located below a height of the first electric contact pad and overlies or extends into an inter cell gap,wherein each interconnector is provided with a cover member covering a front surface of the interconnector,wherein the cover member is mounted to the interconnector with a flexible adhesive, and the cover member is a cover glass piece, andwherein the cover member and the cover glass comprise separate members that are separated from each other by a gap adapted to take up, along with the flexible adhesive, contraction of the inter cell gap.
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Accused Products
Abstract
Solar cell assembly that includes at least first and second solar cells arranged adjacent each other to form a row. First electric contact pad of first solar cell is positioned adjacent to second electric contact pad of second solar cell and second electric contact pad of first solar cell is positioned adjacent to first electric contact pad of second solar cell. Interconnectors connect each first electric contact pad of first solar cell with adjacent second electric contact pad of second solar cell and each second electric contact pad of first solar cell with adjacent first electric contact pad of second solar cell. Each interconnector is sized so that, between adjacent cells, interconnector is below first electric contact pad. Cover glass is provided on a front surface of each solar cell, and each interconnector is provided with a cover member covering a front surface of interconnector.
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Citations
14 Claims
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1. A solar cell assembly including at least two interconnectable solar cells, wherein:
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each said at least two interconnectable solar cell comprising; a semiconductor substrate having a substrate front surface and a substrate rear surface; a first p-n-junction provided in the substrate close to and below the substrate front surface, the first p-n-junction separating the substrate into a substrate front portion having a first doping and a substrate rear portion having a second doping; a front layer comprising a further p-n-junction provided on the substrate front surface of the substrate, the further p-n-junction separating the front layer into a further front portion having the first doping and a further rear portion having the second doping, the further front portion being separated from the substrate front portion; at least one first electric contact being provided on a front side of the solar cell that is electrically connected to the further front portion; at least one second electric contact being provided on a rear side of the solar cell that is electrically connected to at least one contact point provided on the front side of the solar cell; the at least one contact point being placed on a bottom surface of a groove formed in the substrate that opens to the front side of the solar cell and which extends to the substrate rear portion; an electrical connection between the at least one second electric contact and the at least one contact point being provided by the substrate rear portion; and a cover glass being provided on a front surface of the front layer of each said solar cell, wherein each said cover glass is provided with cut-outs located at positions of the at least one contact point; the solar cell assembly comprising; the at least two solar cells arranged adjacent each other to form a row of solar cells, the at least two solar cells comprising at least a first and a second solar cell; first and second electric contact pads for respective first and second electric contacts for each solar cell, wherein a first electric contact pad of the first solar cell is positioned adjacent to a second electric contact pad of the second solar cell and a second electric contact pad of the first solar cell is positioned adjacent to a first electric contact pad of the second solar cell; and interconnectors being arranged to connect each first electric contact pad of the first solar cell with the adjacent second electric contact pad of the second solar cell and to connect each second electric contact pad of the first solar cell with the adjacent first electric contact pad of the second solar cell, wherein each interconnector is sized so that, between the adjacent first solar cell and the second solar cell, the interconnector is located below a height of the first electric contact pad and overlies or extends into an inter cell gap, wherein each interconnector is provided with a cover member covering a front surface of the interconnector, wherein the cover member is mounted to the interconnector with a flexible adhesive, and the cover member is a cover glass piece, and wherein the cover member and the cover glass comprise separate members that are separated from each other by a gap adapted to take up, along with the flexible adhesive, contraction of the inter cell gap. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A solar cell assembly of at least three interconnectable solar cells, wherein:
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each said at least three interconnectable solar cell comprising; a semiconductor substrate having a substrate front surface and a substrate rear surface; a first p-n-junction provided in the substrate close to and below the substrate front surface, the first p-n-junction separating the substrate into a substrate front portion having a first doping and a substrate rear portion having a second doping; a front layer comprising a further p-n-junction provided on the substrate front surface of the substrate, the further p-n-junction separating the front layer into a further front portion having the first doping and a further rear portion having the second doping, the further front portion being separated from the substrate front portion; at least one first electric contact being provided on a front side of the solar cell that is electrically connected to the further front portion; at least one second electric contact being provided on a rear side of the solar cell that is electrically connected to at least one contact point provided on the front side of the solar cell; the at least one contact point being placed on a bottom surface of a groove formed in the substrate that opens to the front side of the solar cell and which extends to the substrate rear portion; an electrical connection between the at least one second electric contact and the at least one contact point being provided by the substrate rear portion; and a cover glass being provided on a front surface of the front layer of each said solar cell, wherein each said cover glass is provided with cut-outs located at positions of the at least one contact point; the solar cell assembly comprising; the at least three interconnectable solar cells being arranged to form an array of solar cells; first and second electric contacts pads for respective first and second electric contacts for each of the at least three solar cells, wherein a first electric contact pad of one solar cell is positioned adjacent to a second electric contact pad of another solar cell and a second electric contact pad of the one solar cell is positioned adjacent to a first electric contact pad of the another solar cell; interconnectors being arranged to connect each first electric contact pad of the one solar cell with the adjacent second electric contact pad of the another solar cell and to connect each second electric contact pad of the one solar cell with the adjacent first electric contact pad of the another solar cell, wherein each interconnector is sized so that, between the adjacent one solar cell and the another solar cell, the interconnector is located below a height of the first electric contact pad and overlies or extends into an inter cell gap, wherein each interconnector is provided with a cover member covering a front surface of the interconnector, wherein each cover member is mounted to each interconnector with a flexible adhesive, and each respective cover member is a cover glass piece, and wherein the cover member and the cover glass comprise separate members that are separated from each other by a gap adapted to take up, along with the flexible adhesive, contraction of the inter cell gap. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification