crystalline silicon


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Related to crystalline silicon: Amorphous silicon

crystalline silicon

Silicon that has an ordered atomic structure. It is used in almost all integrated circuits in the electronics industry. Fabricated from quartzite, a pure form of sand, the quartzite is treated (see below) to create polycrystalline silicon (polysilicon), a very pure silicon with multiple single-crystal regions of different sizes and orientations. The polysilicon is used to "grow" a single-crystal (monocrystalline) ingot that is sliced into wafers.

From Quartzite to Polysilicon
A common method of creating polysilicon is to mix quartzite with carbon materials in order to produce a very pure silicon that is then exposed to hydrogen chloride. This yields trichlorosilane, which is decomposed by an electric current in a chamber. The result is rods of polycrystalline silicon, which become the raw material for the crystal pulling process that creates the ingots. Contrast with amorphous silicon. See polysilicon.
References in periodicals archive ?
Although this material has a lower energy yield than crystalline silicon, solar cells based on it can be produced far more cheaply.
The familiar consumer products are based on a cheaper, thin film silicon process that is less efficient and has a shorter lifetime than the crystalline silicon modules.
Commerce determined that imports of certain crystalline silicon photovoltaic products from China have been sold in the United States at dumping margins ranging from 26.
Sino-American Silicon executives pointed out that demands for polycrystalline silicon materials remain strong as players across the solar-cell industry are vigorously expanding capacities, prompting suppliers of crystalline silicon wafers like Sino-American Silicon to compete for more supply sources of the raw materials.
Crystalline silicon solar cells are based on silicon wafers, while thin film solar cells are made by coating light absorbing layers and electrodes from various materials on a substrate.
Its efficiency at converting sunlight to electricity is about 5%, well under the 10-16% efficiency of crystalline silicon technologies, and thus would need to be improved to really compete with those cells.
The largest solar producer in the Western Hemisphere, the company operates the region's only completely vertically integrated solar factory producing crystalline silicon solar technology.
Despite the lower potential cost of emerging thin-film technologies (less material, higher theoretical efficiencies), crystalline silicon is expected to remain the dominant PV technology for at least the next 10 years due to its higher current average efficiency and its greater stability.
During an independent test performed at TUV Rheinland's Shanghai Testing Center, Jinko Solar's 'Eagle+' solar module has reached a new height of power production for 60-cell multi crystalline silicon module
Solar Energy has depended on Sino-American for 15-20% of the crystalline silicon for its solar cells, making it a major customer of Sino-American.
the world's largest manufacturer of crystalline silicon photovoltaic (PV) modules, will supply Soleos Solar with at least 6MW of modules in the first half of 2009 as part of agreements announced today by the two companies.
Both lines will manufacture crystalline silicon solar cells and modules with a capacity of 120MW each, said a top company official.