Silicon type N, as I have stated in the previous article about silicon that Silicon is a chemical element in the periodic table which has the symbol Si and atomic number 14, is the second most abundant element on earth. where silicon is a material or material that has semiconductor properties. What I will say in this article is about Type N Silicon.
Before I explain further, it is better if I first mention that there are two types of silicon, namely type N and type P. The use of type N and type P is a basic concept in transistor design. Pure silicon is not actually a conductor, but can be made conductive by mixing it with other elements into its crystal structure, which is then known as N-Type Silicon or P-Type Silicon.
So now we will make an experiment by combining silicon with phosphorus. An element which has five valence electrons such as phosphorus, arsenic, antimony and bismuth, whereas silicon has four electron elements. If this phosphorus is mixed or combined with silicon, each of the four valence electron elements from the phosphorus will lock or bind 4 valence electron elements from silicon. But the fifth valence electron element of the phosphorus cannot bind itself. Thus he remains free floating and free to move easily within the crystal. When an electric current is inserted into the mixture of phosphorus and silicon, the free electrons will move to a positive current.
When the phosphorus mixed with the silicon produces the effect mentioned above, then we can say that the mixture is called Type N Silicon, that is, silicon which carries a negative charge.
The mixing process, can be described in the electronic schematic as shown in the picture below:
This is a brief description or explanation of N-Type Silicon this time. In the next opportunity I will try to explain type P silicon. And do not miss the reviews of other articles. May be useful.