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Spherical Solar Cells Are Pretty Awesome

A Korean firm, Kyosemi Corporation, has developed a highly efficient spherical solar cell. It's called the Sphelar and represents a huge leap forward in solar development.
Instead of conventional solar cells which lay flat and only have 1 surface to on line cialis collect the sun's energy, these spheres, measuring between 1-1.5mm in diameter, will be able to harness the energy from most of no prescription tramadol online pharmacy their whole surface. This also gives their panels flexibility as their structures do not need to be rigid, allowing them to be used in more applications than conventional PV. As an added bonus these cells do not block light and can therefore be embedded in clear objects without fully compromising clarity, giving energy producing windows a chance.
Physorg reports that "the Sphelar is made by a process of melted silicon that is subjected to free fall, whereby spheres are created naturally by the microgravity conditions. The result creates little or no waste of raw materials. This feature is recommended site cheapest levitra in uk cost effective and provides efficient use of the rare component silicon."
No word yet on their electrical production potential, but we'll certainly keep our eyes out for this one and report back to you. World Changing has a fantastic interview with Kyosemi's lead engineer. Check it out for a great read.

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Comments (8)Add Comment
written by disdaniel, October 15, 2007
Looks like a neat idea. I do wonder though, normal solar cells require uniform illumination...a silicon sphere will be very difficult to illuminate uniformally. Do these spherical cells operate differently from 'flat' ones?
Nice find!
written by Dan Hahn, October 15, 2007
We covered a blip about Sphelar on our blog last month. More pretty pictures and a few other cool solar applications in this post:

- Dan
Lots of opportunities
written by Brian Green, October 16, 2007
This looks like it could really be something great. I like the idea that companies are looking at solar from completely different angles rather than following everyone else.

These people need to get a lot more details about their products out. I'd also like to see windows made with this stuff and see how it looks. Dan provided a link showing a piece of plastic powering some LED's, but that's still small scale. I also wonder what the cheapest place to buy viagra cost/output is in comparison to solar panels.
Like real free fall?
written by Nicholas, October 16, 2007
Like they need to go in space or drop in an airplane or something? That sounds 'spensive!

Learning more about Sustainable Living at:
Free fall
written by Ben, October 16, 2007
Nicholas, I don't think the drop would have to be excessive, just a couple of meters or less in a cool environment.

In a gasless chamber you can drop a droplet of levitra australia water from mere center meters and buy kamagra in the short fall it will create an almost perfect sphere before impact!
written by Joel, October 16, 2007
As usual, physorg is a bit sloppy. Si isn't a rare element at all, it just takes a lot of energy to purify it to the point that solar cells even work.

Secondly, solar cells block light to the extent that they do anything useful.

But, to answer disdaniel's question: the need for uniform illumination is less stringent if the cell is exceedingly small, or if the cells operate in parallel. I can't imagine stringing all of the tiny spheres in series, so my guess is they're all in parallel within a given device.
Thanks for the pointer to a great interv
written by weee, October 16, 2007
It's understandable that Japan is pushing forward power solutions that do not depend on oil; I guess having leaders that aren't owned by oil companies helps!
I worked on this from '92-95
written by jpalmer, July 17, 2008
I worked on this with the original inventor at Texas instruments.
They work exactly like regular solar cells. They have two advantages. You start with metallurgical grade silicon which is geniune viagra much cheaper than semiconductor grade. They are much easer to purify to solar grade purification. Silicon purification is done by melting and recrystallization from the inside out. This forces impurities to the surface. By removing the viagra uk cheap purchase buy surface you increase the purity. The larger surface to volume ratio the greater purification from each step. since the spheres are small it takes many fewer steps than traditional process. Using the spheres directly removes the step of slicing the silicon wafer. The fewer steps and no slicing significantly saves silicon.

BTW they are usually encapsulated in clear polymers that are both transparent and flexible.

This company over came a problem we worked on in the 90's but could not lick. The form the online levitra us substrate (called the front foil) in a hexagonal bowl pattern. This reflects the incedent light to the sides and bottom of the sphere, significantly increasing the total amount of surface. It also widnes the optimum angle of incident.

Micro forming technology has come a long way. I would love to visit their factory to see their technology.

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