[Diy_efi] Veggie van.

[Mike]

At 11:25 AM 11/12/2002 -0500, you wrote:
>Mike wrote:
>
>> Solarex, who make solar panels, run their whole facility off
>> their product, so where does that figure in your paradigm ?
>
>Wait a minute, that's impossible, they need to bring in raw
>materials, they just can't create silicon from sunlight and
>electricity.

Well <hrrrm> sand is pretty cheap, easy to clean and easy to
convert to silicon, all you need is a bit of power !

>If you figure in the environmental impact of the various
>chemicals used in a typical semiconductor plant, you'll
>probably see things a bit differently.

Making solar cells is not typical of what goes on to
make IC's, the base part of the process is the same but
there is no need for a huge number of steps which chew
up chemicals in your classic IC fabrication, to make
solar cells for power generation is the simplest and
least complex of all semiconductor fabrication, especially
the poly-silicon ones...

rgds

Mike
PS: SiO2 = sand = raw material for silicon, plus the few
trace elements (dopants) like Phosporous and something else.


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