Solar CellsSolar cells are photoelectric devices that convert light energy into electrical energy or electricity. A solar cell behaves in such a way that the voltage and current it produces depends on the amount of light energy to which it is exposed. Most solar cells operate as a photovoltaic material, meaning they can convert light energy to electrical energy regardless of whether the light is in the visible or non-visible spectrum. Photovoltaic cells work on the concept of absorbing light energy, and from that light energy, generate electrons — hole pairs, separating two different types of charges, which can then be sent out to external circuitry where the electrical voltage and current can be used to power homes or devices simply by converting the light energy into electrical energy. Solar cells are usually arranged into large arrays or modules and then those arrays/modules are combined and placed into panels. This means solar cells can be used in large numbers enabling them to absorb large amounts of light. They need to be large enough to be able to generate the large amount of electrical energy needed to power homes or other devices. 더 읽기 읽기 안 함