BEST TAMIL CHAT FORUM & TAMIL VOICE CHAT
Would you like to react to this message? Create an account in a few clicks or log in to continue.

BEST TAMIL CHAT FORUM & TAMIL VOICE CHAT

WORLD NO.1 TAMIL VOICE & VIDEO CHAT ROOM
 
HomeGallerySearchLatest imagesRegisterLog inNew Way of Making Solar Cells Promises Cheaper Power Button10

 

 New Way of Making Solar Cells Promises Cheaper Power

Go down 
2 posters
AuthorMessage
Fréédóm Fightér

Fréédóm Fightér


Posts : 1380
Points : 3934
Join date : 2010-03-16
Age : 38
Location : Vcitoria,Vergin Island

New Way of Making Solar Cells Promises Cheaper Power Empty
PostSubject: New Way of Making Solar Cells Promises Cheaper Power   New Way of Making Solar Cells Promises Cheaper Power Icon_minitimeFri Apr 02, 2010 10:36 pm

A new way of making solar cells promises a cheaper way to generate electricity from the sun and new ways to integrate solar power into other products.

Solar cells, or photovoltaics, are widely made using wafers of silicon that are stiff and brittle. California Institute of Technology physics professor Harry Atwater is making photovoltaics differently.

"Our technology uses 50-100 times less silicon," he said, "in the form of a sparse array of wires. And that sparse array of wires has exactly the same light absorption and electricity-collection properties as the conventional silicon wafer cell."

Caltech/Michael Kelzenberg
Photomicrograph of a silicon wire array embedded within a transparent, flexible polymer film

The tiny silicon wires stick up from the base, or substrate, looking something like a microscopic hair brush. And because the key component of solar cells is an expensive, highly purified form of silicon, there's a real economic benefit to this design.

"So what that means is, in terms of cost, is you can use 100 times less silicon. And that's potentially very significant."

But the silicon is what converts light into electricity, so you might think using so much less silicon would reduce the electrical output, but Atwater says that's not the case.

"The light comes in and is both directly absorbed by the wires, and some of the light bounces around in between the wires. And that bouncing around or multiple scattering in between the wires results in dramatically enhanced absorption," Atwater explained. "In fact, the absorption enhancement that we see is in the range of 20 to 50 times the single-pass absorbance."

Atwater and his colleagues have made prototypes of the design in the lab, and the product doesn't look like the typical solar panels you might see on top of a building.

"What we do with our wire arrays is grow them on a supporting substrate, and we peel them off inside a plastic sheet, so that the material has exactly the optical and electrical properties of a silicon wafer, but instead it basically has the mechanical properties of a flexible plastic sheet."

That flexibility opens the door to potential new applications, such as what Atwater calls "integrated photovoltaics." For example, the solar cell could be built into roofing material, saving money on installation. Other ideas for new uses come from the physical form of Atwater's novel design.

"Well, one of the things that's interesting about these flexible sheets is that they can be curved, so you could imagine putting them in unconventional forms, like on the surface of a vehicle or something like that, where you don't have a flat surface."

The Caltech professor says he's optimistic about commercializing his new solar cell design because the manufacturing process should not require development of any new technologies. And he stresses that it should reduce the cost of generating power from the sun.

"The wonderful thing about solar energy is that it's accessible and available everywhere in the world, from the cloudiest place in northern Europe to the sunniest place in north-central Africa to the Outback of Australia to South Asia. And in fact [the use of solar energy is] growing worldwide for that reason."

Harry Atwater's description of his new design for solar cells is published in the journal Nature Materials.
Back to top Go down
http://wwww.myacn.eu
Fréédóm Fightér

Fréédóm Fightér


Posts : 1380
Points : 3934
Join date : 2010-03-16
Age : 38
Location : Vcitoria,Vergin Island

New Way of Making Solar Cells Promises Cheaper Power Empty
PostSubject: NICE..NICE   New Way of Making Solar Cells Promises Cheaper Power Icon_minitimeFri Apr 02, 2010 11:01 pm

SUPER...SUPER Allwayz Wonderfull
Back to top Go down
http://wwww.myacn.eu
ANAND
Administrator
Administrator



Posts : 631
Points : 1803
Join date : 2010-03-11
Age : 42

New Way of Making Solar Cells Promises Cheaper Power Empty
PostSubject: Re: New Way of Making Solar Cells Promises Cheaper Power   New Way of Making Solar Cells Promises Cheaper Power Icon_minitimeSat Apr 03, 2010 5:13 pm

Aga , nanba neengale article potu neengale paratikolvathu superb , vithiyasamaka irukirathu.

aduthu intha article mikavum payanullathu, excellent and great.

congratulations.

with regards
Anand
Back to top Go down
Fréédóm Fightér

Fréédóm Fightér


Posts : 1380
Points : 3934
Join date : 2010-03-16
Age : 38
Location : Vcitoria,Vergin Island

New Way of Making Solar Cells Promises Cheaper Power Empty
PostSubject: rompaa nanrii   New Way of Making Solar Cells Promises Cheaper Power Icon_minitimeMon Apr 05, 2010 10:04 pm

rompaa nanriii ungaludaiyaa wish kkuu
Back to top Go down
http://wwww.myacn.eu
Sponsored content





New Way of Making Solar Cells Promises Cheaper Power Empty
PostSubject: Re: New Way of Making Solar Cells Promises Cheaper Power   New Way of Making Solar Cells Promises Cheaper Power Icon_minitime

Back to top Go down
 
New Way of Making Solar Cells Promises Cheaper Power
Back to top 
Page 1 of 1
 Similar topics
-
» Stanford Heats Up Solar Power With New Harnessing Technology
» 25 Promises For Marriage
» ENTHIRAN MP3 SONGS
» SOLAR TECNOLOGY
» Fabricación l solar PANEL

Permissions in this forum:You cannot reply to topics in this forum
BEST TAMIL CHAT FORUM & TAMIL VOICE CHAT  :: EDUCATION, JOBS & LATEST TECHNOLOGY :: Education Special-
Jump to: