At absolute zero (0K), an intrinsic semiconductor will act like a perfect insulator. At this temperature, the electrons in the valence band will remain there. The heat energy required to excite the electrons from the valence band to the conduction band is insufficient at 0K. When the temperature increases, some of the electrons from the valence band got excited and moves to the conduction band. This will give rise to the conductivity of the semiconductor.
i.e
in 0 k(0 kelvin) the pure semi conductor the electrons in the valance band don't do any thing.They are lazy for conductivity.But when increasing the temperature increase the energy of electrons and they try to move.At the end electrons win and they can to move.So it happened a conductivity.
insulator is good connection in condector but no that in semiconductor
Which of the following is a semi-conductor
A semiconductor (like Silicon) can be doped to act like various one way resistive conductors and insulators.
No. It behaves like a solid.
the layer of snow act like a shelter for plants. snow is a good insulator. the frost freezes the moisture in a plant cell, which make them dye, so the layer of snow can which provide them moisture, like an insulator. this is also the same as igloo.
Worms behave in a strange way. They like to dig deep into the ground to be cool but navigate to the surface during rain or cooling periods.
in silicon or germanium, the valence shell contain 4 electrons. in order to attain stability, they need 4 more electrons, so we doping it either with trivalent or pentavalent impurities. if we are doping semiconductor with any of these, we call it as an extrinsic semiconductor if we are using pentavalent impurity such as phosphorous, there will be an extra electron,which will go to conduction band. we know electron has negative charge therefore we call it as n-type semiconductor
A semiconductor is a device which is neither a Insulator nor a conductor. They behave like one in the right conditions.
O K is absolute zero. At absolute zero, the electrons of the semi conductors are trapped and are immovable from their electron shell as they are in a low energy state. This makes the pure semiconductor an insulator. One must heat the semiconductor to give the electrons enough energy to move to free them from their electron shell, and thus conduct.
Most metals are conductors. A semiconductor is a non-metal material like silicon or germanium which is'doped' with another substance to give the material either a surplus of outer-shell electrons, or a deficiency of them.
A semiconductor (like Silicon) can be doped to act like various one way resistive conductors and insulators.
The difference among Metal,Semiconductor and Insulator is written bellow-1.Metal:Substances through which electricity can pass easily is called Metal.1.Semiconductor:Substance which conductivity lies between Metal and Insulator are called Semiconductor.1.Insulator:Substances through which electricity can not pass easily are called Insulator.
Conductor-one which conducts(allow current)electric city in all condition. Semiconductor-One which behaves like conductor as well as insulator depending on condition. Insulator-one which donot conduct(allow current)electric city in all condition
at low temperature its forbidden gap is very large so it act as a insulater.
A diode is semiconductor device which is used in a lot of application in electronics equipment.it is negative temp. coefficient device i.e. at lower temp. it is behave like a insulator and high temp. it is work like a good conductor. Basically a diode is used to convert an alternating current into direct current in form of a rectifier. There are many types of diode used in today day to day life depends upon their application. 1 crystal diode 2 photo diode 3zener diode are some of the most useful diode.
With the increase in temperature, the concentration of minority carriers starts increasing. Eventually, a temperature is reached called the critical temperature (85° C in case of germanium and 200° C in case of silicon) when the number of covalent bonds that are broken is very large and the number of holes is approximately equal to number of electrons. The extrinsic semiconductor now behaves essentially like an intrinsic semi-conductor.
Mythically, ostriches stick there heads in the sand when they feel they are in danger. So to behave like an ostrich is to ignore a problem in the hope that it will go away.
A semiconductor is a type of conductor whose conductibility is between a conductor and an insulator. They are typically used as parts of items like electrical circuits.
Perhaps you care to elaborate...if not, then ask yourself: Why do Frenchmen behave like Frenchmen Why do Germans behave like Germans Why do Gambians behave like Gambians Why do Norwegians behave like Norwegians Why do Nepalese behave like Nepalese Why do Venezuelans behave like Venezuelans. Get the point?