Module fabrication of solar cells with low resistivity electrodes
First Claim
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1. A solar module, comprising:
- a first solar cell having a first back-side emitter layer, and having only an area along one edge on a back-side surface covered by a first busbar; and
a second solar cell having only an area along one edge on a front-side surface covered by a second busbar;
wherein the first solar cell and second solar cell are coupled by overlapping the first busbar and second busbar.
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Abstract
One embodiment of the present invention provides a solar module. The solar module includes a front-side cover, a back-side cover, and a plurality of solar cells situated between the front- and back-side covers. A respective solar cell includes a multi-layer semiconductor structure, a front-side electrode situated above the multi-layer semiconductor structure, and a back-side electrode situated below the multi-layer semiconductor structure. Each of the front-side and the back-side electrodes comprises a metal grid. A respective metal grid comprises a plurality of finger lines and a single busbar coupled to the finger lines. The single busbar is configured to collect current from the finger lines.
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20 Claims
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1. A solar module, comprising:
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a first solar cell having a first back-side emitter layer, and having only an area along one edge on a back-side surface covered by a first busbar; and a second solar cell having only an area along one edge on a front-side surface covered by a second busbar; wherein the first solar cell and second solar cell are coupled by overlapping the first busbar and second busbar. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A solar cell coupling system, comprising:
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a first solar cell and a second solar cell, wherein a respective solar cell comprises a back-side emitter layer, a front-side electrode, and a back-side electrode, and wherein a respective electrode comprises a busbar; wherein the first solar cell'"'"'s back-side surface has only an area along one edge covered by a first busbar; wherein the second solar cell'"'"'s front-side surface has only an area along one edge covered by a second busbar; and wherein the first busbar and second busbar are overlapped and in physical contact, thereby facilitating coupling between the first and second solar cells. - View Dependent Claims (17)
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18. A solar cell coupling system, comprising:
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a first busbar positioned on a back-side surface of a first solar cell; and a second busbar positioned on a front-side surface of a second solar cell; wherein the first busbar and second busbar are physically attached to each other in an overlapping manner; wherein the first solar cell has only an area along one edge on the back-side surface covered by the first busbar; wherein the second solar cell has only an area along one edge on the front-side surface covered by the second busbar; and wherein each of the first and second solar cells has a back-side emitter layer. - View Dependent Claims (19, 20)
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Specification