CONCENTRATOR PHOTOVOLTAIC CELL
First Claim
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1. A concentrator photovoltaic cell comprising:
- a front plane through which light passes into the photovoltaic cell for the generation of a photocurrent;
a plurality of conductive gridlines disposed across the front plane so as to communicate the photocurrent with the front plane;
a plurality of separate conductive busbars disposed across the front plane and coupled to communicate the photocurrent with the gridlines, wherein each busbar comprises a bondpad region disposed at a periphery of the front plane for coupling the photocurrent to an external load, and wherein each busbar is elongate in a radial direction and extends into a central region of the front plane.
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Abstract
There is disclosed a concentrator solar cell, having one or more radially elongate bus bars extending into a central region of the cell for collecting current from gridlines. Each bus bar terminates in a separate bond pad region at a periphery of the device.
36 Citations
37 Claims
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1. A concentrator photovoltaic cell comprising:
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a front plane through which light passes into the photovoltaic cell for the generation of a photocurrent; a plurality of conductive gridlines disposed across the front plane so as to communicate the photocurrent with the front plane; a plurality of separate conductive busbars disposed across the front plane and coupled to communicate the photocurrent with the gridlines, wherein each busbar comprises a bondpad region disposed at a periphery of the front plane for coupling the photocurrent to an external load, and wherein each busbar is elongate in a radial direction and extends into a central region of the front plane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A solar photovoltaic system comprising:
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a photovoltaic cell; and an optical concentrator arranged to deliver sunlight having a concentrated intensity of at least one hundred suns to said photovoltaic cell; wherein the photovoltaic cell comprises; a front plane through which light passes into the photovoltaic cell for the generation of a photocurrent; a plurality of conductive gridlines disposed across the front plane so as to communicate the photocurrent with the front plane; a plurality of separate conductive busbars disposed across the front plane and coupled to communicate the photocurrent with the gridlines, wherein each busbar comprises a bondpad region disposed at a periphery of the front plane for coupling the photocurrent to an external load, and wherein each busbar is elongate in a radial direction and extends into a central region of the front plane. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A solar photovoltaic system comprising:
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a photovoltaic cell having a front surface with an area of less than 200 mm2; and an optical concentrator arranged to receive incident sunlight and to deliver the sunlight concentrated by a factor of at least fifty to a front plane of the cell whereby the photovoltaic cell generates an electrical current; wherein the photovoltaic cell further comprises; a plurality of metallic gridline structures disposed at the front plane of the cell that are arranged to carry the electrical current into or out of the front plane; and one or more separate radially elongate metallic busbars also disposed at the front plane of the cell and arranged to carry the electrical current to or from the gridline structures; wherein each busbar extends from a peripheral region into a central region of the front surface of the cell. - View Dependent Claims (32, 33, 34, 35, 36, 37)
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Specification