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new nanocrystalline solar panels could drop cost of panels by 80%

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Posted by Psi-Clone on August 3, 2003, 7:37 am
 
http://www.swissinfo.org/sen/Swissinfo.html?siteSect 5&sid@82364




Posted by N9WOS on August 3, 2003, 4:33 pm
 



For a long time, they have been trying to make a cell that
uses photosynthesis to generate electricity.
Because it is a relatively efficient process.
and it only requires readily available organic chemicals for electricity
production.
(ie) An environmentally friendly, and powerful solar cell.

And if that story is true, they have finally succeeded.



Posted by William P.N. Smith on August 3, 2003, 4:57 pm
 
I haven't been following that, can you explain how you get from
photosynthesis, which takes CO2 and sunlight and makes sugar, to
electricity, which is a separation of electric charge thing?

Thanks!

--
William Smith    wpns@compusmiths.com    N1JBJ@amsat.org
ComputerSmiths Consulting, Inc.    www.compusmiths.com

Posted by N9WOS on August 3, 2003, 7:17 pm
 

Photosynthesis is the action of taking photon energy and
using it to cause a chemical reaction to produce something.

(IE) PHOTO activated SYNTHESIS of chemicals.
Thus the bases of the term photosynthesis.

There is two ways to go about generating electricity
from photosynthesis.

Have light break apart or make a chemical/s and
as it recombines or breaks apart, it generates an electric charge.

Or have the charge generated as the chemical is made or broken down
in the first place.
(ie) Have the charge generated when the photo reaction happens then
deal with the generated chemical afterwards.
Preferably have it where the generated chemical will also produce a charge
when it breaks down into it's base components in preparation for the
next cycle.

All that can be put in a thin film membrane and cost very little
to produce when you find out a working system that is durable.



Posted by R. H. Allen on August 3, 2003, 4:58 pm
 On Sun, 03 Aug 2003 10:56:03 -0400, William P.N. Smith


For crystalline solar cells, the cost of the silicon plus ingot casting
and slicing makes up 40-50% of the cost of the finished module.
Amorphous panels *are* significantly less expensive than crystalline
panels on a cost per unit area basis, but the low efficiency of the
amorphous panels keeps them roughly equal on a cost per unit power
basis.


You won't find many people in the PV industry who believe that cheap PV
is a matter of finding a big breakthrough, nor will you find many in
academia who believe that. The ones who do are typically those who
haven't been working in PV, but discover something that they think might
be applicable. People who have been around for awhile tend to think that
the way to cheap PV is incremental improvements coupled with economies
of scale that improve as the industry grows larger.

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