Interesting article explaining the success of Israel’s bSolar. The company mass-produces bi-facial solar panels at low cost. The two-sided panels attract more sunlight than standard panels. Also, important is the b for “Boron” which is the key ingredient that improves efficiency by twenty per cent.
http://israel21c.org/environment/the-b-in-bsolar-is-the-secret-to-its-success/