Make a solar cell with his hands

Everyone knows that the solar cell converts solar energy into electrical energy. And there is a whole industry for the production of such items in huge factories. I suggest that you perform your own solar panel from readily available materials.

Components of the solar cell

The main element of our solar cell with you there will be two copper plates. As is known, the copper oxide is the first element in which scientists discovered photoelectric effect.

So, for the successful implementation of our modest project will need:

1. Copper sheet. In fact, a list we do not need, and would be enough for a small square (or rectangular) pieces of 5 cm.

2. A pair of alligator clips.

3. Microammeter (to understand the magnitude of the generated current).

4. Electric oven. It is necessary to oxidize one of our plates.

5. Transparent tank. It is quite suitable conventional plastic bottle of mineral water.

6. Salt.

7. Conventional hot water.

8. A small piece of sandpaper to clean up our copper plates from the oxide film.

Once all the necessary prepared, you can start the most important step.

Cooking plate

So, first of all we take a plate and wash it to remove all the fat from the surface. Thereafter, using sandpaper scraping oxide film and already put on the cleaned strip included electric burner.

After that, we turn it and watch it as it heats and changes our plate with you.

Once the copper plate fully acquire black hold it for at least forty minutes on a hot plate. Then turn off the tile and wait until completely cool your "fried" copper.

Due to the fact that the cooling rate of the copper sheet and the oxide film will vary a great portion of the black plaque depart independently.

After the plate has cooled down, take it and gently rinse black film under water.

Important. One should not tear off the remaining black areas, or in any way to bend. It is necessary to remain intact layer of copper.

Then we take our plate and neatly put into the prepared tank and attach to the edges of our crocodiles brazed wires. Moreover, untouched piece of copper connect with the net and processed to plus.

Then preparing a saline solution, namely a few tablespoons of salt dissolve in water and pour the liquid into the container.

Now we check the performance of our joint design by microamperometer connection.

As you can see it is working installation. In the shadow microammeter showed about 20 microamps. But the sun already maxed device. Therefore, I can only say that the sun produces such a setup is clearly more than 100 mA.

Of course, from this setting, you can not even light a bulb, but to make such a setup with your child, you will be able to warm up his interest in the study, such as physics.

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Thank you for your attention!