What if I told you other companies are producing multi junction solar cells at over 44% efficiency and that one of the companies involved already has a relationship with GT, would you believe me? Well you should, because the company that has both stacking technologies and experience mulberry factory shop with multi junction solar cells is Soitec. GT signed an agreement with Soitec over a year ago on February 25th, 2013. It is supported by decades of substrate engineering expertise and a strong IP portfolio." The thickness of transferred layers can range from just a few microns to several hundred microns..
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