Solar Modules Range Introduction


General information on solar cell technology
Solar cells directly convert sunlight into electricity by means of the photovoltaic effect. This occurs when photons are absorbed by a solar cell which generates a voltage across its terminals. Cells are connected in series within a solar module to provide sufficient voltage to operate a system.

Modules can be connected in series and parallel to increase the system power. This solid state process provides a clean, silent, nonpolluting and reliable source of electrical energy.

Sollatek supplies two PV technologies:
• Multicrystalline (also called Polycrystalline) Made from cells cut from several silicon crystals
• Monocrystalline

Made from cells cut from single silicon crystals A crystal is the regular geometric state taken up by the elements in certain conditions. Mono- and multicrystalline cells are silicon wafers sliced from cylindrical silicon crystals. These wafers are then chemically treated in furnaces to enhance their electric properties, after which an anti-reflect coating is applied to the cell surface to help it absorb radiation more effectively. Thin metal wires are soldered to the front of the cell. These “ribbons” of metal on the cell act as the positive contact, whereas a solid layer of metal on the back side of the cell acts as a negative contact. Monocrystalline and multicrystalline are chemically stable, making them durable and will last for a very long time, if properly protected. They provide ideal technology for making medium to large solar panels. Monocrystalline cells have a single colour tone, whereas Multicrystalline cell surfaces have multi patterns. Multicrystalline cells have an efficiency of 9-13%, compared to 11-16% for the monocrystalline. (i.e. if solar radiation is striking the cells at a perpendicular angle with an intensity of 1000W/M², 90 to 130 Watts per m² of solar cell is converted to electricity).

Sollatek multicrystalline and monocrystalline solar modules Sollatek’s high efficiency solar modules are constructed for 36 or 72 crystalline cells that can be connected in series to raise system voltage to 24V or 48V. The cells are individually tested and matched for optimum performance before being built into the protective module structure. A Tedlar® base is used and ethylene vinyl acetate encapsulant. High transmission tempered glass protects the cells from the front and a high strength polymer sheet at the rear. A reinforced aluminium frame completes the laminate structure which is fully sealed against moisture and protected from environmental and mechanical damage.


•  High efficiency modules
•  Reinforced anodised aluminium frame
•  Protected by 2 schottky by-pass diodes
•  Universal junction box
•  Pre-drilled frame for easy mounting
•  Product warranty : 5 years
•  Efficiency warranty : 25 years



•  Telecommunications
•  Rural electrification
•  Grid connected large scale system
•  Power plants
•  Commercial buildings
•  Cathodic protection
•  Water pumping