In this article, we want to take a look at the details of polycrystalline solar panel matter. If you are ready for details, we can go ahead step by step now. Polycrystalline solar cells are the most widely used variant of solar cells. They convince by a very good price-performance ratio and a good eco-balance. These advantages are as averse to a lower efficiency than monocrystalline cells.
Production of Polycrystalline Solar Panel
Unlike the production of monocrystalline panels, no single crystals are pulled out of the silicon melt. Instead, the melt cools in a crucible, forming silicon blocks of several crystals. Several manufacturing methods are used, which differ in some details, for example in the method of heating the silicon melt.
The goal is to get the largest possible crystal blocks. In the widely used Bridgeman process, an induction heater is used, which ensures that the silicon melt cools from layer to layer from bottom to top.
As a result, more single crystals tend to grow slowly. On the other hand, if the melt cools down evenly, crystallization nuclei form randomly distributed throughout the crucible, leading to the formation of small crystals.
Polycrystalline Solar Panels – The Efficiency
Polycrystalline solar panel – cost effective modules
Polycrystalline solar panels are not as efficient as monocrystalline solar panels, but polycrystalline modules are much cheaper. Polycrystalline solar modules are therefore the most frequently installed modules. Characteristic is the crystal structure, which allows the polycrystalline solar modules of the photovoltaic system to reflect strongly when exposed to sunlight.
The efficiency of polycrystalline solar panels today is about 15 percent. This leaves polycrystalline modules behind the monocrystalline solar cells, which achieve module efficiencies of approximately 19 percent. This is offset by the significantly lower production costs and the significantly lower energy requirements.
Polycrystalline solar panels can be used anywhere without problems, where the lower efficiency can be compensated by a correspondingly larger area. Domestic roofs are usually large enough to achieve high performance solar photovoltaic systems.
In the case of a very small, serviceable roof area, the use of monocrystalline panels is recommended. Plants on open spaces usually use polycrystalline solar cells as the size of the PV system can be adjusted more easily.
Polycrystalline Solar Panel – Stable Module Prices
The prices for polycrystalline solar panel sources have been steadily declining for years, but have largely stabilized in the current year. The development of prices for monocrystalline and polycrystalline solar panels is closely linked, and in the national and international statistics on electricity generation costs.
A very good life cycle assessment
Polycrystalline solar panels have a very good life cycle assessment due to lower energy consumption during production. These are the products of the invention that are produced as high as those of monocrystalline modules. In addition, since the blocks are already produced in a square shape, less waste is generated.
Polycrystalline modules are the norm
For years, the market share of polycrystalline solar panels has been around 80 percent, so the standard version. Their use can be made without hesitation, unless there are specific reasons against it in individual cases. This may be the case.