Here is a nice article on the possible disruptor technology
http://cen.acs.org/articles/92/i8/Ta...rovskites.html
"Almost overnight, researchers catapulted the conversion efficiency of perovskite solar cells from a few percent to more than 16%. “It’s tough to predict where this technology will end up,” Snaith says, but it certainly has “the right ingredients” to deliver exceptional efficiencies at the lowest possible cost.
He adds, “So long as we can improve the stability of this technology, I would say we are witnessing the emergence of a contender for ultimately low-cost solar power.”