1c-Si Sapphire

1c-Si Sapphire Proof of Concept Completed April 4, 2013

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• MIT Technology Review “Your next Smartphone Screen May Be Made of Sapphire”, March 20, 2013.
• NREL, “Heteroepitaxial film crystal silicon on Al₂O₃; new route to inexpensive crystal silicon photovoltaics” July 2011
• No light trapping was implemented, and there was partial passivation. The Si thickness was only ~3–5 microns and much greater efficiency is expected with additional microns of Si (~20 max).