Published: 7/5/21
Author: GiverofMemory
Maintainer: GiverofMemory
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See Also: boundary foil, HHO
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Discussion: Solar-Talk
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Cadmium Telluride 1.4-1.5eV bandgap which is close to optimum [1]

Silicon phosphide

Silicon Phosphide [2]. With a bandgap of 1.55eV this can be used as a solar cell material in all current uses for solar cells and also potentially lower light conditions. Can also be used for photoelectrochemical hydrogen production. Also see binary compounds of silicon [3].

Creating phosphide with aluminum and silicon dioxide and sodium hexametaphosphate; 170g sodium hexametaphosphate, 100g silicon dioxide, 80g aluminum powder, 20g sodium chloride mixed/ground well [4].

Liquid copper decomposes silicon carbide [5]. I was hoping molten copper, silicon, phosphorus they would separate leaving copper with a layer of silicon phosphide on top.

Phosphoric acid and charcoal makes the red stuff [6].


The hope is that heating this at around 1000c for at least half an hour would create silicon phosphide on top of copper. Copper melts at 1084c so probably would want to keep it below that?

Silicon melts at 1411 c.

Silicon aluminum alloy melting [7]

Creating silicon from sio2 [8].

Silicon dioxide from sand [9].

50/50 AlSi melts at about 1000c [10].


Diffusion of copper in GaAs similar to silicon [11] may be able to be effected by electric charge.

Copper in silicon reduces bandgap 0.14ev [12] which would put SiP at 1.55-.14 = 1.41 ev which is quite ideal.

Solubilities of metals with aluminum [13].

Cu3Si is all that forms and the rest is pure Si [14]. May need flux to prevent the cracking at the boundary.

Gallium arsenide

Gallium Arsenide 1.43 eV which is most efficient solar cell to date [15].

Iron sulfide has low bandgap[16]

You want the eV to be high for maximum conversion but not too high to miss a lot of the lower wavelengths that are too large to be captured. It appears 1.55ish can be ideal because it is right in a solar flux minimum [17]. One aspect of chlorophyll has a bandgap of 1.55 aev as well and some higher properties too [18].

Combo of 1.7 and 1.1 could achieve theoretical 50% conversion [19].

A solar cell is basicaply constructed as a battery [20].

Traveling faster than light

See also boundary foil

Using the principle seen here:

We can use sunlight as one medium and aether as the second medium. Since we know aether is stationary photons we know how to grip them using spiral magnetic fields.

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