POLYCRYSTALLINE SILICON SOLAR PANEL
Polycrystalline phases are composed of a number of smaller crystals or crystallites. Polycrystalline silicon is a material consisting of multiple small silicon crystals. polycrystalline cell have efficiency of 20.4% and market share of about 54.9% of all solar panel market which is highest then any other technology of solar pannel. polycrystalline is little cost effective then monocrystalline technology and it have highest market share in all solar panel industries which is about 57%.
polycrystalline solar panels are made up from the polycrystalline cells which are made from high purity multi crystalline form of silicon. Due to this the cost of polycrystalline solar panels are high compare to other new generation solar panels like cigs,dye sensitized solar panels. polysilicon cost in last few years have came down by very good margin which becomes a big reason for reduced cost of polycrystalline solar panels.In 1970 polycrystalline solar panels cost per watt was 65-75$ which reduced to 0.8-0.9$ in 2014.
polycrystalline solar panel have more than 55% share in photovoltaic systems around the world.Polycrystalline silicon, or multicrystalline silicon cells are made from cast square ingots—large blocks of molten silicon carefully cooled and solidified. They consist of small crystals giving the material its typical metal flake effect. Polysilicon cells are the most common type used in photovoltaics and are less expensive, yet less efficient than those made from monocrystalline silicon.highest efficiency for polycrystalline cell is registered around 20.4% but for polycrystalline solar panel it ranges from 15 to 17%.polycrystalline silicon have very high stability in natural environment which result into longer polycrystalline solar panel lifespan ranges around 25 years.