How do Solar Cells Generate Electrical Power?
Solar energy is becoming a well known and talked about topic by the general public, not just the scientists. It is in the headlines a lot because it is renewable and will reduce our carbon footprint. However, the question how does solar power work and how to build a solar panel remains a mystery to those who are not commonly acquainted with it. Some people know that it is just sunlight turned into electricity, but there are more things to understand.
The sun alone is a vast and immense source of energy that may be utilized as a great supply of electricity. The problem with fossil fuels are that they pollute the environment while digging them out of the ground, they pollute the environment when transporting them to their place of use and they pollute the environment when converting them into electricity, whereas the sun has none of these downsides. The environmental impact will be huge, in a positive way; carbon emissions will be reduced dramatically and hopefully slow down global warming.
Sunlight is not automatically converted into electricity. Sunlight undergoes a process where it is transformed into energy where it may be used. The light is captured or absorbed by a solar panel which is made up of silicon crystals, these are normally either monocrystalline or polycrystalline panels. Thin film solar panels are also used but this is still a very new and we don’t know how it compares over the long term. The electrons in the silicon start to move around when the sunlight hits it, it is this movement of the electrons which creates an electric charge.
The solar panels are often fitted to the roof of a house or are mounted on racks in the yard. Basically, a solar cell is termed as a device that captures the energy of the sunlight and transforms it to useable energy which is electricity. Each cell will generate a charge and this charge is converted into a current which passes from one cell to another and so building up the power generated. Each cell is individually manufactured so the electrons move around when exposed to sunlight so you can have part of the panel in the shade but the part in the sun will be producing electricity. The said movement is the one transmitted into the solar power hardware and thus, creates a current that may be used to power up appliances and electronic items.
Here is a simple way to understand how a solar panel works which might be useful to know if you are going to build a solar panel. Imageine having a pack of cards and throwing them up in the air, as they tumble to earth will spread all over the floor. As the light of the sun shines upon the solar cells, the electrons in the silicon also scatters randomly and generates solar electric power. Because of its simplicity; this enables many people to build a solar panel and save money by doing it themselves.
Now, when the electrons are triggered, it sends the power to the hardware that finally converts the sunlight into electricity. The hardware is scientifically created in order to make the sun’s energy into a power that is compatible with our electronic items. The output of the panel can generate anything from 1 watt to 200 watts depending on the size and number of solar cells.
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