Pressure transfer process for thin film solar cell fabrication
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United States of America Patent
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Mar 22, 2016
Grant Date -
Mar 19, 2015
app pub date -
Sep 18, 2013
filing date -
Sep 18, 2013
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Abstract
In one aspect, a method for fabricating a thin film solar cell includes the following steps. A first absorber material is deposited as a layer A on a substrate while applying pressure to the substrate/layer A. A second absorber material is deposited as a layer B on layer A while applying pressure to the substrate/layer B. A third absorber material is deposited as a layer C on layer B while applying pressure to the substrate/layer C. A fourth absorber material is deposited as a layer D on layer C while applying pressure to the substrate/layer D. The first absorber material comprises copper, the second absorber material comprises indium, the third absorber material comprises gallium, and the fourth absorber material comprises one or more of sulfur and selenium, and wherein by way of performing the steps of claim 1 a chalcogenide absorber layer is formed on the substrate.
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