A solar cell made up of by different materials. The main aim of making solar cell is to keep price minimum while extracting maximum power from it. The materials used for making a solar cell is discussed below.
1) Crystalline Silicon : Nowadays solar cells present in market are usually made up off this material. Early forms of silicon photovoltaic cells were very expensive because of difficulties in the industrial preparation of high-grade silicon. very pure single-crystals of silicon need to be grown as cylindrical ingots, about 10 micrometers diameter, in order to maximum the cell exposure area. This is known as "monocrystaline silicon".
Recent development in this has been to grow silicon crystal in the form of ribbon rather than an ingot. This process generates less pure silicon than the traditional method and the efficiency is in between 10-12%.
2) Polycrystalline Silicon : It consists of a small silicon crystals oriented in a thin layer of polycrystalline material. The solar cells made up of this material is less expensive than the crystalline silicon on the cost of efficiency.
3) Amorphous Silicon : In this type of silicon there is no regular crystal structure therefore they defects in bonding and structure. Amorphous silicon can be deposited onto backing material in very thin films around 01 micrometers thickness. This reduces the amount of usage of silicon material resulting in reduction in mass production cost. Although they are cheaper but have less efficiency than the crystalline silicon.
This blog is about renewable energy sources. I am trying to cover the different types of renewable energy sources that can help in the generation of electricity.
