Types of solar cells:

Been manufacturing solar cells of different materials but most of these materials are rare nature first properties toxic polluting or complex manufacturing and expensive and some are still under study and research and it has focused attention on the solar cell manufacturing silicon so as to provide an element silicon in nature as well as to scientists The researchers were able to study this element extensive study and identified the various properties and suitability for the manufacture of solar crystal cells  cracked and crystallization.

1- solar silicon crystal cells:

These cells are made ​​of silicon through the development of silicon rods single or multiple crystallization then Aarb to chips and treated chemically and physically through various stages to reach solar cells.High efficiency of these cells ranging between 9 - 17% and mono silicon cells crystallization expensive in terms of technical difficulty and energy consumption, while many silicon crystallization cells are less expensive than single-crystallization and also less efficient.

2 - cells solar silicon Almoravid (cracked crystallization):

Material of these cells with a silicon where configuration crystal cracked the presence of the element hydrogen or other elements introduced intentionally to earn properties electrical characteristic and cells silicon Amorphous affordable for cells crystalline silicon where deposition layer stripe thin using small quantities of raw materials used in the few operations compared manufacturing processes crystalline . The manufacturing Amorphous silicon cells more and suitable for continuous self-Architectures.
Ranging efficiency cells of this article is between 4 - 9% for the large surface area and a little more than for a small surface area and that was influenced by the stability of the solar radiation.