Why do we use semiconductor instead of conductor?
We use semiconductor because we wish a material that you can control easily the conductivity. And for this purpose, semiconductors are the best one. It is not so easy to control the conductivity of isolator and conductors. The transistor works as a switch, that is close (low resistance) or open (high resistance).
How are semiconductors used to control the movement of electric charges?
A semiconductor is an element or compound that conducts electricity under some conditions but not others. This property of being neither a good insulator nor a good conductor makes semiconductors useful for controlling electric current. This is why semiconductors are used to make photovoltaic systems.
Why do we use semiconductor instead of conductor or insulator in electronic device write it’s importance?
Semiconductor materials are useful because their behavior can be easily manipulated by the deliberate addition of impurities, known as doping. Current conduction in a semiconductor occurs due to mobile or “free” electrons and electron holes, collectively known as charge carriers.
How does a semiconductor differ from a conductor?
The conductivity of the conductor is high, whereas semiconductor is moderate. The conductor has a large number of electrons for transmission, whereas semiconductor has a very little number of electrons for transmission. The temperature coefficient of a conductor is positive, whereas semiconductor has negative.
What is the purpose of a semiconductor?
A semiconductor can help controlled flow of electricity. The basic function of such a device is to switch ON and OFF the flow of electricity as and when required. A semiconductor device can perform the function of a vacuum tube with hundreds of times its volume.
What is the benefit of semiconductors?
Unlike vacuum tubes, semiconductors are shock-proof. Moreover, they are smaller in size and occupy less space and consume less power. Compared to vacuum tubes, semiconductors are extremely sensitive to temperature and radiation. Semiconductors are cheaper than vacuum diodes and have an unlimited shelf life.
Why do we use semiconductor in electronic devices?
Semiconductors are used in many electrical circuits because we can control the flow of electrons in this material, for example, with a controlling current. Semiconductors are also used for other special properties. In fact, a solar cell is made of semiconductors which are sensitive to light energy.
What about the difference of semiconductor?
Conductors are the materials that easily allow the flow of electric current through them. Semiconductors are the materials that have their conductivity between the conductors and the insulators. Insulators are the bad conductors of electricity or they do not conduct electric current through them.