29 Sep '13, 8pm

Slideshow: First Solar’s CTO on CadTel and Silicon PV Under One Roof

Slideshow: First Solar’s CTO on CadTel and Silicon PV Under One Roof

"CdTe and GaAs: you can't get better than those two materials from a Shockley-Queisser limit perspective. It's perfectly matched to the solar spectrum. In fact, we can push the bandgap one way or another by adding a sprinkle of this or a sprinkle of that and get even more. The problem is cadtel is a polycrystalline material. It's messy, so there are a lot of losses. That's bad news, but it's also good news, because it means my team has a long way to go from a 13 percent module (which is kind of what we produce day-in and day-out today) to where I believe the entitlement is, which is over 18 percent module efficiency. By the way, we've made a 16.1 percent module, so we know how to do it. We just have some more work to do to get it into production."

Full article: http://www.greentechmedia.com/articles/read/Slideshow-Fir...

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