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why solar energy

Why Do We Need Solar Energy?

Solar is the solution:

The abundant use of coal, oil and natural gas threatens our future with toxic pollution, and global climatic changes, we all must transform our economy and learn to thrive on the planet's abundant supply of renewable energy i.e solar energy.

Solar Power generation is a clean energy system that generated electricity from sunlight that falls on the earth. It can be used just about anywhere in large buildings, in factories, in residential homes and also in remote areas where it is too expensive to extend the electricity from grid. It is clean exhaustible energy source with abundant energy and flexible options.

Crystalline Silicon

The most common type of solar cells uses crystalline silicon (c-Si) as its light-absorbing material. Solar cells in this category are sometimes referred to as "bulk" or "wafer-based" solar cells because their light-absorbing material is originally created in bulk form, sliced into wafers approximately 180-240 micormeters thick, and then positioned as a layer in the solar cell structure. The most common types of light absorbing materials used in crystalline Silicon solar cells are monocrystalline silicon ( which is sliced from a single, large Silicon crystal), polycrystalline or multicrystalline Silicon (sliced from square cast ingots of Silicon), and ribbon Silicon( formed by drawing flat ribbons from molten silicon).

Thin Film

In contrast to crystalline silicon solar cells, the light absorbing materials incorporated into thin film solar cells are "applied" to substrate surfaces using deposition techniques capable of creating layers that are 1/100th the thickness of the light-absorbing wafers in crystalline silicon cells. The most common light-absorbing materials used in thin-film solar cells are Cadmium Telluride (CdTe), Copper Indium Gallium diselenide (CIGS) and amorphous Silicon (a-Si), a non-crystalline form of Silicon. Gallium Arsenide (GaAs) is used in thin-film solar cells developed for high-efficiency applications such as space commerce and exploration.