PV innovations: Crystalline silicon roundup

MOST SURVEYS CONCLUDE THAT CRYSTALLINE-SILICON PV (C-SI PV) STILL HOLDS THE GREATEST MARKET SHARE OF ALL SOLAR INSTALLATIONS. BUT WITH OTHER TECHNOLOGIES NOW RAMPING UP, WHAT ARE C-SI COMPANIES DOING TO MAINTAIN THAT LEAD AND PERHAPS EVEN EXPAND ON THIS? JOYCE LAIRD TALKS TO SOME OF THE PLAYERS ACTIVE IN THIS TECHNOLOGY AREA.