Here is a link to grapheme and photovoltaics. It does not mention GTAT ....only talks about the technology. Given that GTAT is heavily into photovoltaics it is possible that there is some activity in this area. Not sure they have the financial bandwidth at this time to do much with it and the pay back seems to be way into the future. 265 Kg boules looks like a better direction.....my opinion!
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