Method for making solar cell and solar cell system

A solar cell system making method, comprising steps of:

• S11, making a round P-N junction preform by (a) stacking a P-type silicon layer and a N-type silicon layer on top of each other, and (b) forming a P-N junction near an interface between the P-type silicon layer and the N-type silicon layer, wherein a surface of the P-type silicon layer away from the N-type silicon layer is defined as a first surface, and a surface of the N-type silicon layer away from the P-type silicon layer is defined as a second surface;
• S12, forming a first electrode preform on the first surface and forming a second electrode preform on the second surface, thereby forming a round solar cell perform comprising the first electrode preform, the P-type silicon layer, the N-type silicon layer, and the second electrode preform arranged in the above sequence;
• S13, forming a curved photoreceptive surface with the P-N junction exposed on the curved photoreceptive surface by cutting the round solar cell preform into at least one rectangle solar cell and at least one arc shaped solar cell, the curved photoreceptive surface being on a curved surface of the at least one arc shaped solar cell and being configured to receive incident light beams;
• S14, stacking the at least one rectangle solar cell on top of each other along a first direction to form a preform, and forming a flat photoreceptive surface with the P-N junction exposed on the flat photoreceptive surface by cutting the preform along the first direction into a plurality of laminal first solar cell systems, the flat photoreceptive surface being parallel to the first direction;
• and
• S15, stacking the at least one arc shaped solar cell to form a second solar cell system, wherein the curved surfaces of the plurality of arc shaped solar cells the second solar cell system defines a common photoreceptive surface and a common planar surface opposite to the common photoreceptive surface, the curved surface of each of the at least one arc shaped solar cell cooperatively defines the common photoreceptive surface.

A solar cell system making method for making solar cell, the method comprising steps of:

• S11, making a P-N junction preform by (a) stacking a P-type silicon layer and a N-type silicon layer on top of each other, and (b) forming a P-N junction near an interface between the P-type silicon layer and the N-type silicon layer, wherein a surface of the P-type silicon layer away from the N-type silicon layer is defined as a first surface, and a surface of the N-type silicon layer away from the P-type silicon layer is defined as a second surface;
• S12, forming a photoreceptive surface with the P-N junction exposed by cutting the P-N junction preform into at least one arc shaped solar cell preform comprising a curved side surface and a planar side surface opposite to the curved side surface, the photoreceptive surface being on the curved side surface;
• and
• S13, forming a first electrode layer on the first surface, and forming a second electrode layer on the second surface.