Method of making silicon photovoltaic cells
AssigneeInternational Business Machines Corporation
InventorsOussama Alameddine, Marian Briska, Klaus P. Thiel
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Abstract
A method of making silicon solar cells and other silicon photovoltaic cells. The method includes the steps of forming a silicon element having a metallic electrode coating on one surface of the element, applying to the other surface of the element a coating containing aluminum and silicon and heating the coated element at a temperature below the eutectic temperature of aluminum-silicon to form an antireflective coating of a fine matrix of silicon pyramids doped with aluminum. The matrix formed on the surface of the silicon has an overlying aluminum coating. A portion of the aluminum coating is removed to expose the matrix for use as a photovoltaic cell.
Claims13
A method of making silicon solar cells and other silicon photovoltaic cells and comprising the steps of
- forming a silicon element having a metallic electrode coating on one surface of said element,
- applying to the other surface of said element a coating comprising aluminum and silicon,
- heating said coated element at a temperature below the eutectic temperature of aluminum-silicon to form an antireflective coating of a fine matrix of silicon pyramids doped with aluminum,
- said matrix having an overlying aluminum coating, and removing a portion of said aluminum coating to expose said matrix for use as a photovoltaic cell.
Dependencies are inferred from the claim text.