Photovoltaics (PV)
Photovoltaic solar panels are created in two forms: mono-crystalline and polycrystalline.
Mono-crystalline
Mono-crystalline, or single crystal solar panels, are manufactured primarily through the Czochralski process. The silicon crystal ingots created for the photovoltaic solar panels through this process are cut into thin slices using a wire saw. On these silicon crystal ingots, conductive wires are screened onto the surface. This comprises a photovoltaic solar panel. Mono-crystalline cells, although more expensive, are much more efficient than poly-crystalline photovoltaic solar panels.
Polycrystalline
Poly-crystalline, or a solar panels with multiple crystals, start with molten silicon. The silicon is cut from a buole. The shapes that are cut are grown and connected with conductive wires. Poly-crystalline photovoltaic solar panels offer a lower efficiency than mono-crystalline solar panels.
Typically, homeowners purchase poly-crystalline cells. They are cheaper than mono-crystalline photovoltaic solar panels. Mono-crystalline photovoltaic solar cells are used when not enough roof space is available. But more important than choosing between mono-crystalline and poly-crystalline is selecting a quality brand.
Above: Our MD Anthony Morgan and Kevin McCloud at Grand Designs Green Heroes Awards.
