Hairy Solar Cells Could Mean Higher Efficiency

kitzilla writes "Two research groups working independently have come up with what they say are cheap processes for growing nanowires to be used with solar cells. The 'hairy' cells provide a direct path for electrons collected at the panel face to reach an electrode, something which has the potential to dramatically improve system efficiency."

Comments

Lab advancements != commercially viable

[QuasiEvil]

The problem is that a large portion of the lab performance-enhancing techniques are so insanely expensive that they *can't* go into production. Many of them - particularly exotic materials or multi-junction cells - are prohibitively expensive to make, given the meager performance improvements. I think Nanosolar has the right idea for now - craptastic cells made cheap. Who cares if they're large if they're incredibly inexpensive?

Re:Let me guess...

[tepples]

Currently there is no single device that is sensitive to the whole visible spectrum Then why not have some sort of dichroic reflector pass specific wavelengths to specific PV cell banks?

Re:Let me guess...

[Tweenk]

a good chunk of baseline power could be provided by solar thermal. Baseline power is the minimal power required during the day, so it has to be supplied constantly. Solar thermal plant output drops to 0 watts at night unless you use some means of energy storage, and is severely reduced during the winter or when there are thick clouds, so they're not suited to supplying baseline power unless a reliable means of storing huge amounts of energy with little loss is developed. For now, the only feasible baseline power plants are hydro, nuclear and fossil.

Generally solar is good as long as the sky is clear. Imagine what would happen to a 100% solar economy hit by a month of thick clouds. I don't think relying on something as random as the weather for your main energy supply is a good idea. It's OK e.g. when you want to power farm machines, because if there's no power you can wait, but powering cities with it doesn't seem wise. I also think that green activists should stop pretending they can do without nuclear power (at least those of them that do), because right now they can't, and telling everybody not to invest in nuclear and wait until we come up with adequate energy storage technology is making the global warming worse by preventing substantial CO2 emission reductions.

Wow, ANOTHER solar cell breakthrough

[GodfatherofSoul]

Wake me up when there's actually a cheap product. These articles need their own icon; maybe Bigfoot, the Easter Bunny, Santa Claus, the Loch Ness Monster, or La Chupacabra.