Solar PV

Solar PV - Solar PV Cells - Solar PV Panels

Solar PV is a method of generating electrical power by converting solar radiation into direct current electricity. It is usual to join several solar panels together to supply electricity to a building

Solar PV Cells - Solar PV Panels

Solar PV Panels - Monocrystalline CellsA Solar PV cell is a solid state device that converts the energy of sunlight directly into electricity by the photovoltaic effect. Assemblies of Solar PV cells are used to make solar panels (also known as Solar PV modules). Solar PV Panels can be connected together in series or in parallel (or both) to create an array with the desired peak DC voltage and current.

Solar PV Panels - Solar PV Cells

Solar PV Panels comprise a panel of crystalline silicon cells, an aluminium frame and a sheet of glass on the side facing the sun, allowing light to pass through while protecting the semi-conductor wafers from abrasion and impact damage.

Monocrystalline Silicon Wafer Solar Cells

Monocrystalline silicon cells are usually produced using the Czochralski process. Single crystal wafer cells tend to be expensive because they are cut from cylindrical ingots that do not completely cover a square solar cell module. This results in a substantial waste of refined silicon. Monocrystalline Photovoltaic panels can be easily identified as the four corners of the cells are cut off at an angle.

Solar PV Panels - Silicon CrystalsPolycrystalline Silicon Wafer Solar Cells

Polycrystalline silicon (also called multicrystalline silicon) cells are produced by pouring hot liquid silicon into square moulds. The silicon is cooled to form solid blocks that are then cut into thin wafers.  Polycrystalline cells are less expensive to produce than single crystal silicon cells, but are less efficient.

Silicon Wafer Solar PV Cells

Despite the numerous attempts to improve solar cells by using new methods and materials, the Solar PV market is still dominated by silicon wafer based Solar PV Cells. This means that most solar cell manufacturers are currently equipped to produce this type of solar cell. Consequently a large body of research is being carried out over the world to manufacture silicon wafer based solar cells at lower cost and to increase the conversion efficiencies without a significant increase in production cost.

Solar PV Panels - Polycrystalline CellsSolar PV Panels - Solar Thin Film

One particularly promising new technology is crystalline silicon thin films on a glass backing. This technology combines the advantages of crystalline silicon as Solar PV Cell material  (abundance, non-toxicity, high efficiency, long-term stability) with the cost savings of the thin film approach.

Solar PV Panels - Solar Thin Film

Solar Thin Film cells can use less than one per cent of the expensive raw materials (silicon or other light absorbers) compared to wafer based Solar PV Cells, leading to a significant price drop per Watt peak capacity.

For Information on Solar Thin Film link to Solar Thin Film

Solar PV is technology related to the practical application of photovoltaic cells in producing electricity from sunlight. The energy generated from these solar panels, referred to as solar power is an example of solar energy

 

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