For some reason, any time there is announced a "more efficient solar cell" technology, you always see this kind of stuff, and then never hear anything more about it. In some cases, its a bunch of bunk, but even in cases like these, where there is actual research, development, etc - you still see nothing, even years later. For instance, I remember some hype about 5-8 years back about some kind of holographic filter or something that was being developed (in Tuscon, IIRC) that would separate out wavelengths of light, and direct them to solar cells optimized for those wavelengths, increasing the efficiency of the whole system by quite a lot (no where near 90% efficiency, but much better than what currently exists) - and that was the last of it I've heard of. They've had plenty of time to bring things to market, but I have yet to see it. Or, what about that whole "screen printed solar cells" technology that was developed in Japan? I've heard of outfits here in Arizona saying they were going to commercialize it and sell cheap solar panels - then nothing; that tech is well over 10 years old. I don't think there's conspiracy or scam here; most likely just market forces. Ultimately what I am saying about all of this is "I'll believe it when I can buy it"...