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We propose and simulate a thin-film crystalline solar photovoltaic cell comprised of two junctions - one in the Si top layer and the other in the Ge bottom layer. Assuming an anti-reflection coating on the front surface, we have shown that optimal solar cells favor a thin Si layer and a thicker Ge layer. For AM1.5G solar irradiance, we predict efficiency of ~20 % for a cell in which the Si film thickness...
We have recently commissioned a new production facility for the manufacture of thin film amorphous silicon based solar panels with an annual capacity of 30 MW. The amorphous silicon alloy processor uses the roll-to-roll concept pioneered by Energy Conversion Devices, Inc. The machine is approximately 90 m long and 3 m tall, and is capable of depositing triple-junction cells onto six 2.6 km long, 36...
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