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Difference between revisions of "Solar Cells and Modules"
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| + | A solar cell or photovoltaic cell is a device that converts light directly into electricity by the photovoltaic effect. | ||
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| − | Source: [http://www.iea-pvps.org/pv/snapshot/techproc.htm IEA PVPS] | + | Source: [http://www.iea-pvps.org/pv/snapshot/techproc.htm IEA PVPS] |
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| + | Category:Solar | ||
Revision as of 11:24, 24 June 2009
A solar cell or photovoltaic cell is a device that converts light directly into electricity by the photovoltaic effect.
Single crystal PV cells are manufactured using a single-crystal growth method and have commercial efficiencies between 15 % and 18 %.
Multicrystalline cells, usually manufactured from a melting and solidification process, are less expensive to produce but are marginally less efficient, with conversion efficiencies around 14 %.
PV cells made from ribbons demonstrate an average efficiency around 14 %.
Thin film cells, constructed by depositing extremely thin layers of photovoltaic semi-conductor materials onto a backing material such as glass, stainless steel or plastic, show stable efficiencies in the range of 7 % to 13 %. Thin film materials commercially used are amorphous silicon (a-Si), cadmium telluride (CdTe), and copper-indium-gallium-diselenide (CIGS).
Commercially available thin film modules:
- Are potentially cheaper to manufacture than crystalline cells
- Have a wider customer appeal as design elements due to their homogeneous appearance
- Present disadvantages, such as low-conversion efficiencies and requiring larger areas of PV arrays and more material (cables, support structures) to produce the same amount of electricity
Source: IEA PVPS
Category:Solar
