Solar Power Cells: The Building Blocks Of Solar Power
Jan 22nd, 2010 by Dan Avella
Solar energy is often seen as the “energy of the future.” Solar panels, the devices used to convert power from the sun to electricity, are becoming more and more efficient. Today’s panels can now be tied to the power grid, or they can be “off grid” with the help of battery or wind turbine power. Solar power cells are the key to this electricity generation.
These solar cells make up solar panels. Like a checkerboard, these cells are aligned, and together they produce energy. They are also called “modules, ” which are cells that together form one item. Electricity is created from cells, and they are becoming ever more efficient at creating it.
These “building blocks” of solar power are all photovoltaic cells. This means that they use semiconductors to create electricity. Semiconductors absorb the light that falls on the cells as energy. The energy frees electrons. This electron movement creates a current, which can be drawn out of the cells by using metal as a conductor.
Not all cells are the same. However, the most common cell is made out of silicon.
Polysilicon cells are the familiar blue cells that are seen almost everywhere nowadays. Because they are thicker, they absorb more energy. One issue with them, however, is that they must remain flat in order to not break. This means that they cannot be used for certain purposes.
Thin film solar panels absorb less light than polysilicon cells because of their thinness. However, the panels are flexible, which means that they may have many purposes. They can also be made more efficient by placing a bunch of them together.
While solar energy is sustainable (or can be used without negative environmental effects), it does have negative aspects. For one, it requires sunlight to work, but some places do not have year-round sunlight. However, it remains an efficient form of alternative energy.
You can build your own solar cells, install them in your home, and lower your electric bill by as least 50 percent. Free yourself from the electric grid, join the green revolution and learn how to build a solar cell. VisitSolar Powered For Your Home for more information and to download plans for building solar panels.
Solar Energy & Solar Panels
Improve our earth and go solar!!!