Semiconductors will not function if they do not possess electrical conductivity. The system takes place in the conductor’s connection with the insulator. This is perhaps the most basic among a list of assumptions behind semiconductor technology. But since this is very basic, there are yet other principles to take note of. In this regard, it pays to take a glimpse of the semiconductor types that are significant in some enterprises.
Semiconductors are very essential in technological advancements especially in mobile phone, computer, television and radio production. They are also highly crucial in production of transistors. In understanding more about semiconductor technology, it pays to take a look at its four types.
First kind of semiconductor – intrinsic
An intrinsic semiconductor is sometimes known as the purest of all semiconductor types. It contains thermal materials that have the ability of lessening covalent bonds as they freed electrons. Part of its work is to go to a solid mass for the support of electric component conductivity. In situations where the covalent bonds lose their electrons, electrical properties of the semiconductor will get affected.
Second kind of semiconductor – extrinsic
Aside from the intrinsic semiconductor there is also the extrinsic semiconductor. When compared to the intrinsic version, the semiconductor technology for extrinsic semiconductors rely upon doped or added particles. With this fact, it is also known as a doped semiconductor. The additional particles play a vital role in transforming the conductivity characteristics of the electrical component.
Here is one concrete sample for extrinsic semiconductors. Silicon, the most usual semiconductor, may be used in order to come up with a gadget. Each atom of silicon allocates four categories of valence electrons through a process known as covalent bonding. If silicon will be substituted by five valence electrons of phosphorous, four of the covalence electrons will be put together while the remaining one will be free.
Categories of extrinsic semiconductors – N-type and the P-type
Wrapping up the four classifications of semiconductors are the two sub-classes for extrinsic semiconductors. One is tagged as the N-type whereas the other is the P-type. The N-type is comprised of electrons and holes. The former plays as majority carriers while the second plays as minority carriers. This signifies that the electron’s concentrations are more than that of the holes.
As for the P-type semiconductor, it acts opposite functions with that of the N-type. To explain further, the P-type semiconductor technology contains holes that play as majority carriers while the electrons become minority role players. In some instances though, there are systems that follow a P-N Junction. This takes place when a P-type semiconductor is found at one side of the system even if the N-type was already made in the other side.