Solar cell. Close-up of the surface of a solar (photovoltaic) cell,which converts light into electrical energy. The cell is made from silicon (blue),a semi-conductor. Because the silicon is a semi-conductor,the energy of photons of light is enough to release electrons from the silicon. The electrons are collected through a grid of wires (white),forming an electrical current. This cell contains numerous small silicon crystals,and so is called a polycrystalline (amorphous) cell. It is less efficient than a single-crystal cell,but is far cheaper to manufacture. Solar power is an environmentally-friendly energy source and does not pollute or use up limited resources | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Pasieka, Alfred |
Bildgröße: | 5472 px × 3648 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |