Hairy Solar Cells Could Mean Higher Efficiency 203
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."
Sheeit Negro, that's all you had to say! (Score:2, Interesting)
Know what would rawk? A 5 year moritorium on new PV cell research so we could get some actual PV cell production going.
Re:Dramatic efficiency improvements unlikely. (Score:2, Interesting)
Re:Nanowires are nice and everything... (Score:4, Interesting)
I also always wondered why people don't advertise how much cooler CFL bulbs are than incandescent bulbs. I replaced 480W of lighting in a bathroom with 72W (replaced 60W clear bulbs with 9W vanity CFLs) and not only is it brighter and the light softer (and thus makes ladies feel prettier when doing whatever it is they do for hours in bathrooms) but it's a lot cooler. And they will pay for themselves in roughly 13 months.
And similar swaps make a really significant difference when sitting under the 5-bulb light that is just above the dining table. A friend of mine used to unscrew some of the bulbs when she did homework.
So basically now I save electricity while saving electricity.
Re:Let me guess... (Score:5, Interesting)
I just invested in a PV system for my house (in sunny SoCal). As a computer geek, I asked our guy if it was stupid to invest, since there always seem to be efficiency breakthroughs on the horizon.
He reminded me that efficiency generally meant "smaller" and perhaps "cheaper". But since my roof was plenty adequate for what I needed, "smaller" wasn't really an issue. Cheaper will ALWAYS be the case, as it always has been.
Don't get frozen by the thought that solar power isn't worth investing in today. It totally is.
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Re:Nanowires are nice and everything... (Score:3, Interesting)
Now we just need affordable dimmable CFLs for that dining table fixture, and low-wattage CFLs with the same wonderful very-warm color temperature that you get from dimming a 300W floor lamp down to 3W, which does as much as alcohol for making your partner look more attractive.
Re:Let me guess... (Score:4, Interesting)
Re:Wow, are u clueless or what (Score:3, Interesting)
Planned installations chasing incentives are a far cry from power plants installed to meet grid needs.
24h power (storage and retrieval of energy) is unnecessary system complexity when you are not looking to replace the current grid, and at their current level of deployment (nil, pretty much) this is not a concern. You might want to co-fire with natural gas to avoid thermal cycling of your plant like they do at Kramer Junction in CA, but that's beside the point.
Furthermore, there is a strong disincentive to producing 24h, and that is the overnight bulk rate for electricity - maybe $.06/kwh vs more than $.20 at peak when you have the solar resource.
Re:Let me guess... (Score:2, Interesting)
My systems now run a campus with 4 buildings, a large computer network, a machine shop, an electroplating line (not all at once, there's only a couple of us to use it all). Is that finally good enough? Not to the oil trolls, the people who won't pay for power upfront, or who think that if we just tax those other guys enough (and who pays for that, really?) someday soon I'll be able to buy a magic box to clip to the antenna on my Toyota and it will the run on freely available hydrogen...I have permits for all kinds of dangerous things -- but can't even buy hydrogen, evidently in reality it's more dangerous than guns, high explosives, various chemistries...the list goes on.
Don't slashdot me all at once at
www.coultersmithing.com
Re:Wow, are u clueless or what (Score:1, Interesting)
Re:Dramatic efficiency improvements unlikely. (Score:5, Interesting)
Just to be contrary: at least in theory, solar COULD supply base-load. All you need to do is integrate the Earth's power grids. Then you'd have a more or less constant amount of current available throughout the grid.
Of course, this isn't practical - even ignoring the political implications, transmission losses would create serious problems. Getting away from AC current and using DC for all grid transmission could fix part of that problem, but that's not likely to happen any time soon.
And yes, you're certainly right about nuclear. Realistically, it's our best option at this point in time. That's one thing that France got right.
Re:Let me guess... (Score:2, Interesting)
Re:Wow, are u clueless or what (Score:1, Interesting)
There may have been problems with systems installed back in the 70s but few problems with modern systems.
In China and Europe there thousands of these systems installed and they have proven very reliable.
Not sure why these myths are so persistent.
Effort actualy has to be put in (Score:4, Interesting)
Re:Let me guess... (Score:4, Interesting)