Moduli fotovoltaici amorfi

AMORPHOUS SILICON MODULES

Amorphous silicon photovoltaic modules are cheaper than crystalline silicon photovoltaic modules.
The production process is completely different from that of Poly/Monocrystalline modules, and implies the use of a much lower quantity of raw material (silicon) (some 1% when compared to the standard production of crystalline cells); in aesthetic terms, the module is a single, large and continuous dark-coloured surface, looking like a single cell extended to all the panel.

Interlock currently offers modules whose nominal peak power is 40W. Yet, our factory’s technical office is now studying panels whose power ranges up to 50-60 W, and whose size is the same as that of the current 40W panel. And this is done at the favourable price of amorphous silicon – which is much cheaper than the micromorph modules.

Disadvantages: The amorphous silicon panel has a lower performance level than poly/mono crystalline panels (6-9% against 13-16%); in fact, in order to install 1kWp, a surface of modules of some 20m2 (against the 8-10m2 of crystalline technologies) is currently needed (with the 40W module). In the future, the 50-60W module will reduce such surface. The power loss over the years is high in the first months after installation, while it is very reduced in the remaining years of its useful life (at least 30 years).

The total yearly energy production per power unit installed (1 kWp) is the same as, or even higher than that of crystalline technologies. Therefore, such panels are not suitable for the installation of small residential plants, while they are exceptional for the so-called Photovoltaic fields for energy production, or on large industrial roofs or in areas where the local climate is not favourable.

Advantages: The main advantage of the amorphous technology is its excellent capacity to capture diffused light, which is typical of areas with low direct radiation; therefore, despite their low conversion efficiency, amorphous modules can be exceptional for the production of energy, even where there is little light.

Energy production is constant even where it is cloudy, foggy or where there is low radiation (poor exposure, sunrise, sunset), and even where the module is partly shaded (which is not unluckily possible in the event of crystalline technologies).

This is why the production of energy by an amorphous silicon plant can be higher over the years. As said above, amorphous silicon plants are ideal for large surfaces and for the above plantations. For example, those who own fields that cannot be used for agricultural purposes or that cannot be built upon should consider a plantation of amorphous silicon panels, which is an ideal and profitable solution for the production of electric energy (you just need to have a VAT number).