Back-contact solar panel
The back contact technology is ideal for applications requiring battery charging. It allows for a very high charging current despite very small dimensions.
There are 3 types of photovoltaic solar panels:
- Monocrystalline photovoltaic solar panels: the solar cells are made from a single block of melted silicon, so they are very "pure." These panels offer the best efficiency (between 13 and 17%), but are more expensive to produce, and therefore to sell. The cells are generally octagonal and of a uniform dark color (navy blue or gray).
- Polycrystalline photovoltaic panels: their solar cells are made from a block of silicon crystallized into multiple crystals. These photovoltaic panels have an efficiency of 11 to 15%, but their production cost is lower than monocrystalline panels. The cells are rectangular, dark blue with reflections. These panels are generally considered to have the best quality/price ratio.
- Amorphous photovoltaic panels, whose cells are produced from a "silicon gas," which is deposited on glass, flexible plastic, or metal. Amorphous cells have a lower production cost, but their efficiency is only 7% to 10%. This type of cell is used for flexible or foldable panels.
The back-contact solar panel
A photovoltaic solar panel equipped with monocrystalline solar cells of the back contact type offers extremely high efficiency (very high efficiency). Indeed, the back contact technology allows for exceptional conversion efficiency and improves the performance of the photovoltaic solar panel when the light spectrum decreases. This optimizes the panel's efficiency throughout the year. These characteristics make this type of photovoltaic solar panel particularly suitable for use in isolated sites (camper, marine, home, pumping, telecommunications, etc.).
Photovoltaic solar panels using back contact technology are composed of monocrystalline solar cells currently considered the most efficient on the market. These cells have the particularity of producing a very high charging voltage even at high temperatures and allow for excellent charging power even at very low irradiance.
The back-contact technology maximizes the different light spectra by very low temperature coefficients and thus optimizes battery charging, regardless of the weather, temperature, throughout the year.
Characteristics and advantages of a photovoltaic solar panel equipped with back contact technology:
- Cell with unmatched efficiency reaching up to 21.5%
- Very high charging currents
- Cell connection made on the rear side
- Anodized aluminum frame, stable and pre-drilled, quick assembly, simple fastening
- Higher charging power even at high temperatures thanks to an excellent very low temperature-voltage coefficient
- Excellent efficiency even at low irradiance thanks to perfect utilization of the entire light spectrum. Suitable for all weather conditions.
- Particularly robust due to the use of reinforced solar glass with very high light permeability.
- Very high reliability thanks to the use of aerospace techniques to connect the cells without tension.
- Module sealing and waterproofing guaranteed by inserting the cells into EVA using the multilayer technique.