PASSIVATED CONTACTS FOR PHOTOVOLTAIC CELLS
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United States of America Patent
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app pub date -
Nov 9, 2015
filing date -
Nov 9, 2015
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Abstract
A method of fabricating a passivated contact for a photovoltaic cell includes depositing a tunneling oxide layer on a first face of a substrate. An amorphous silicon layer is then deposited on top of the tunneling oxide layer. An aluminum layer is screen printed on top of the amorphous silicon layer. The aluminum layer is configured to serve as a crystallization catalyst for the amorphous silicon layer. The amorphous silicon layer and the aluminum layer are then heated to a crystallization temperature that is configured to cause the amorphous silicon to crystallize and to sinter the aluminum layer.
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