Wednesday, October 7, 2009

Why solar doesn't need to be cheap or high tech

But that is just a way to bootstrap the solar-cell industry.
Now that we are understanding the technology, it's costs are falling.
We are finding simpler cheaper chemistry and better production techniques.

It is viable. Or almost at this point.
It's possible to build solar cells on cheap plastics using printing techniques and chemicals that are no more expensive then paint.

Titanium Dioxide TiO2 and organic dyes are about as cheap as it gets.
There are also conductive plastics now.

LCD's and Solar panels need clear conductors, the older silicon ones didn't use clear conductors, and as a result were not very efficient.

But the flexible printable kind need it,

Below is a block of notes I have on transparent conductors.
ITO is expensive because it requires vacuum deposition.

Zinc Oxide is about as cheap as it get's
Zinc Oxide and Titanium Dioxide are both sold as powders in bulk for food and paints.
Although not particularly efficient, they very low cost,

Clear conductors

1.) Indium tin oxide (ITO)
2.) pedot - conductive plastic
3.) aluminum doped zinc oxide
4.) stannous chloride - re: Jeri Ellsworth

On Tue, Oct 6, 2009 at 10:34 PM, av wrote:
and another key think about solar.
solar-cell tech was production-ized for the military
solar-cell production  was never meant for civilian use

Military need solar cells to power spy satellites. that's the key.
so world-over - Military built plants without any tho to cost of manufacturing or of 'commercial viability'
they didn't need commercial viability,  they didn't need to be cheap,  any cost is fine. because there are very few alternatives to electricity in space.

but then arose a problem  - what to do with the plants excess cell output  ?
the solution in the 1960's was to sell the surplus to the civilians
but no civilian could buy the damn things at cost of mfg. it was too high.
so the govts started the Subsidies on Solar cells,  in 1960s.

That's the origin of this whole mess.
people wrongly started to think that solar is viable.,   its not. 
as soon as the govt-subsidies stop, it stops being viable,.
people don't get it.


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