Solar cell with structured gridline endpoints vertices
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United States of America Patent
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Apr 22, 2014
Grant Date -
Dec 23, 2010
app pub date -
Sep 1, 2010
filing date -
Nov 7, 2008
priority date (Note) -
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Abstract
An H-pattern solar cell structure includes at least one busbar disposed in a first direction on an upper surface of a semiconductor substrate, and parallel gridlines formed on the semiconductor substrate such that each gridline extends over and contacts each busbar, wherein each gridline includes a central gridline portion and at least one endpoint structure disposed on at least one end thereof, the endpoint structure having a nominal width that is at least 1.5 times the width of the central gridline portion. The gridlines are co-extruded with a sacrificial material such that a base portion of each gridline forms a flattened structure with sacrificial material formed thereon. The endpoint structures are formed such that Each central gridline portion forms a raised vertex portion extending upward from the upper surface of each busbar.
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