OPTONICA SOLAR - RISEN Photovoltaic Monocrystalline Panels with PERC technology - TIER-1 SOLAR PANELS
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Risen Energy solar panels are high quality, high performance Tier-1 products.

PERC solar modules are growing in the market, but what is PERC cell technology and what are its advantages? To better understand PERC cell technology’s importance, let’s first review some common inefficiencies found in standard silicon solar panels.

A standard solar panel cell contains two layers of silicon, commonly called “n-type” and “p-type” for their negative and positive charge behavior. A solar panel creates electricity when sunlight hits the solar cells, knocking electrons loose from the n-type layer as the p-type layer accepts them, creating an electric field. Solar cells built with only two silicon wire layers will encounter a few efficiency losses. The first type of losses come from inefficiencies with capturing sunlight; sunlight can be reflected by the solar cell itself, blocked by wires, or sometimes go all the way through the cell and turn into heat, reducing cell efficiency. Another type of losses stem from the random motion of electrons knocked loose by the light; electrons may recombine with the silicon material on the front and back of the solar cell or sometimes miss going through the circuit. Luckily, some efficiency losses can be mitigated by technology. For example, adding a front passivation layer stops front-side recombination and prevents some reflection. To prevent unwanted electron motion through the cell to the rear contact, you can add a back surface field layer or place all the wires on the back of the panel during production.

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