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US 2009/0260681 A1Published application
Solar cell and method for manufacturing the same
AssigneeLG Electronics Inc.
InventorsJu-Hwan YUN, Jong-Hwan Kim, Bum-Sung Kim, Ji-Hoon Ko
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Abstract
The present invention relates to a solar cell and a method for manufacturing the same. More specifically, the present invention provides a silicon solar cell capable of minimizing defects and recombination of electrons-holes by removing a damaged layer formed by a laser edge isolation process to isolate a silicon substrate and covering a protective layer on a surface thereof and a method for manufacturing the same.
Claims23
A solar cell, comprising:
- a first conductive type semiconductor substrate;
- a second conductive type semiconductor layer that is formed on the substrate and has a conductive type opposite to the first conductive type;
- at least one groove that penetrates through the second conductive type semiconductor layer and reaches a predetermined depth of the first conductive type semiconductor substrate;
- a protective layer formed on the groove;
- a first electrode that electrically contacts the second conductive type semiconductor layer;
- and
- a second electrode that is formed on the first conductive type semiconductor substrate.
4 more elements
A method of manufacturing a solar cell, comprising:
- forming a first conductive type semiconductor layer;
- forming a second conductive type semiconductor layer having a conductive type opposite to the first conductive type on a first conductive type semiconductor substrate;
- performing edge isolation to isolate front and rear surfaces of the first conductive type semiconductor substrate;
- removing a damaged layer formed by the edge isolation;
- burying a groove formed by removing the damaged layer and forming an anti-reflective layer applied on the second conductive type semiconductor layer;
- and
- forming a first electrode that contacts at least a portion of the second conductive type semiconductor layer and the anti-reflective layer, and a second electrode that contacts at least a portion of the rear surface of the substrate.
4 more elements
Dependencies are inferred from the claim text.