Date: 2022-03-21

Mono vs Mono-Perc Solar Panels--SankoPower Solar Panels Technology

With the increase in demand & recent technological advancements, solar energy is becoming more & more efficient day by day.

From traditional poly panels to mono & bifacial modules, we are continuously evolving. You might have heard of mono-crystalline panels – but have you ever heard of mono-perc?

Mono-perc is an advanced version of mono-crystalline panels that are considered to have higher efficiency even in low-light conditions.
In this guide, I am here with a detailed guide on mono-perc solar panels. We will also learn how mono-perc modules are different from standard ones.
Before I begin, let me give you a brief overview of both monocrystalline & mono-perc panels.

Monocrystalline Solar Panels
Mono-crystalline, as the name suggests, are PV panels with cells made up of a single (mono) crystal of Silicone. On the other hand, if we use multiple crystals in a single cell, then it is called a multi-crystalline or polycrystalline panel.

Silicon wafers are used in the process of manufacturing mono-crystalline cells. These wafers are formed by making very thin slices of silicon boules or ingots.

Mono-Perc Solar Panels
Mono-perc solar panels are slightly different from the standard monocrystalline panels.
PERC stands for Passivated Emitter & Rear Cell is a modern technology used to increase the efficiency of standard solar modules. This is done by adding a passivated layer in the rear of the cell.
Note: The passivated layer can be added in all types of PV modules (i.e. Poly, Mono & others). Since mono-perc are quite popular, thus we have only taken it into consideration.
In Mono-perc modules, the same passivated layer is added in the back (rear) side of the solar cells.

But what’s the benefit of adding it?
Let’s understand it by having a look at how both panels behave when sunlight falls on their surface.

The sunlight that falls on the surface of a standard module is either reflected, absorbed, or passed through the surface.

On the other hand, the light passed through the cells can be used again in case of the perc modules.

In mono-perc modules, a passivated layer is added on the rear side of the standard modules. This layer is capable of reflecting back the photons passed away from the panel.

In this way, more light is absorbed by the module & thus higher production. This is how mono-perc solar modules work.
Let us understand the major differences between the two (mono vs mono-perc solar panels) & which one is best for you?
SankoPower is a solar panel PV modules supplier and factory in China. Our 250W 320W 380W solar panels are mono Monocrystalline Solar Panels. For 450W 550W 650W mono solar panels, SankoPower adopt the latest technology of half cut cells and mono perc solar panels technology to maximum its power efficiency.

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