Similar to the Copper Chlorine Cells. We have found that if you use Conductive Nickle Paint you will get far better results. But start out using the screen mesh or the aluminum wire. You can buy Nickle Paint on the internet. Simply search for “ Nickle Paint suppliers “ on your search engine. You can do the same for finding thin copper sheeting. There is also a company in Louisville KY, that sells copper sheeting, see Conner Manufacturing 18th st. Louisville, KY. (502)-587-1 387 Or Vendome Copper & Brass 729 Franklin St. Louisville, KY. 40202 (502) -587-1930
Warning: You build at your own risk!
Creative Science & Research PO BOX 557 New Albany, IN. 47150
Copyright 2003
#401
The fabrication of a modem solar cell is very complicated and
Modern
a delicate process. In most cases, a large silicon ingot is grown from a small crystal in an extremely clean and sterile environ-ment. Any dust or particle contamination even down to the atomic level during the growing process can completely ruin the ingot. Impurities must typically be kept to one part per billion.
The growing process itself is slow, and the very pure materi¬als required are extremely costly. Because of this, a single ingot which is later sliced into thin cells approximately 0.05 centime-ters thick often costs thousands of dollars to produce.
This fact coupled with the general inefficiency (7-14 typi¬cally) of even these modem cells has kept the price of photoelec¬tric cells too high to be competitive with other sources of power.
Someday, lower cost production techniques together with higher efficiency will make widespread use of clean, renewable solar energy possible. Someday solar cells will be a very common
Source of energy, the idea of deriving electricity directly from sunlight will continue to excite the inventor and experimenter.
It is well known that if even 1 of the Sahara desert were
covered with the solar cells just described, it would more than
supply our worlds current energy needs. We will briefly outline
some of the processes and materials that are now being resear-ched for converting the use of solar energy into electricity.
You should have no trouble building the cells that will be described in the following pages. Be cautious. Use good judge-ment and common sense in handling the chemicals and heating processes described. You'll find that a simple solar cell can be constructed by a persistent student, Solar cells that can make outstanding science fair projects.
The electrical output from the homemade copper cells in this article will be well below that of modern commercial cells, but the materials cost is also very low. Often a cell can be literally produced for pennies! The loss in efficiency is probably more than made up in the reduction of their price.
But again the Screen printed solar cells are far more power-full than the copper type solar cells.
COPPER SOLAR CELLS
A small, carefully made solar cell of approximately 2 1/2" diameter will produce around 5 milliamperes of current in direct sunlight. This is enough to drive a sensitive light meter or extremely sensitive relay. Banks of these cells have even been used to run small electric motors.
Experiment with the procedures described. You may stumble onto a method of producing even more efficient cells than we have. Just be sure to be very careful. The chemicals described can be
dangerous if abused or mishandled. You build at your own risk! There are an estimated 80 trillion kilowatts of solar electrical energy available in the northern hemisphere.
save our earth and let's develop solar system,solar panels,solar energy,solar power,outdoor solar lights,solar pool heaters
solar pool covers,solar electric power systems,first solar,solar eclipse,for long life human future.
No comments:
Post a Comment