Systems and methods for manufacturing photovoltaic devices

Details Systems and methods for manufacturing photovoltaic devices Systems and methods for manufacturing photovoltaic devices

H - Electricity

01

L

H01L 31/00 (2006.01)

Patent

CA 2623382

Die for photovoltaic cells can be manufactured using a pattern region that substantially covers the usable surface area of a crystalline workpiece. Bars can be etched into the workpiece that extend substantially the entire length of the workpiece. These bars then can be diced to form die having a width substantially equal to the thickness of the workpiece, and having an edge ratio of ab out 20:1 or less. Such a process can maximize conversion area, thereby extracting more energy from a given volume of photovoltaic conversion material. Contacts can be placed on opposing edges of the die to form photovoltaic cells, which in some embodiments can function regardless of orientation in a solar panel.

L'invention concerne un dé pour des cellules photovoltaïques qui peut être fabriqué au moyen d'une région de motifs qui couvre sensiblement la surface utilisable d'une pièce cristalline. Des barres peuvent être gravées sur la pièce de façon qu'elles s'étendant sensiblement sur toute la longueur de la pièce. Ces barres peuvent ensuite être coupées en petits morceaux afin de former un dé ayant une largeur sensiblement égale à l'épaisseur de la pièce et un ratio de bord d'environ 20:1 ou moins. Ce procédé permet de maximiser la zone de conversion, ce qui permet d'extraire davantage d'énergie d'un volume donné de matériau de conversion photovoltaïque. Des contacts peuvent être placés sur des bords opposés du dé afin de former des cellules photovoltaïques, qui, dans certains modes de réalisation, fonctionnent quelle que soit l'orientation dans un panneau solaire.

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