Substrate for solar cell, and solar cell
AssigneeShin-Etsu Chemical Co., Ltd.
InventorsHideo Ooiwa, Takenori Watabe, Hiroyuki Otsuka, Kazuo Hara
Life of this patent
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Abstract
Provided is a substrate for a solar cell, wherein a flat chamfered portion is formed on one corner of a silicon substrate having a square shape in a planar view, or a notch is formed on the corner or close to the corner. This invention makes it possible to easily check the position of the substrate and determine the direction of the substrate in a solar cell manufacturing step, and suppresses failures generated due to the direction of the substrate.
Claims10
A solar cell-forming silicon substrate of square shape with corners as viewed in plan view, which is provided with a chamfer at one corner or a notch at or near one corner.
A solar cell-forming silicon substrate of square shape as viewed in plan view, having a first corner and a second corner not diagonal to the first corner, which is provided with a chamfer at the first corner or a notch at or near the first corner and with a notch at or near the second corner or a chamfer at the second corner, the notch or chamfer at the second corner is selected to be different from the chamfer or notch at the first corner.
A solar cell-forming monocrystalline silicon substrate of square shape with rounded corners as viewed in plan view, which is provided with an orientation flat at one corner or a notch at or near one corner.
A solar cell-forming monocrystalline silicon substrate of square shape with rounded corners as viewed in plan view, having a surface in (100) plane, which substrate is provided with an orientation flat or notch in a crystal orientation <110> passing substantially the center of the substrate.
A solar cell-forming monocrystalline silicon substrate of square shape with rounded corners as viewed in plan view, which is provided with an orientation flat at one corner and a notch at or near another corner not diagonal to the one corner.
Dependencies are inferred from the claim text.