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Why intrinsic semiconductors behave like insulator at low temperature?
Wiki User
∙ 12y ago
at low temperature its forbidden gap is very large so it act as a insulater.
Wiki User
∙ 12y ago
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Why does an extrinsic semiconductor behave like an intrinsic semiconductor at high temperature?
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.
Why the semiconductor behave like a insulator as a zero?
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.
Within a CPU a transistor act as?
In a microprocessor, field-effect transistors behave as electrically-controlled switches.
How does voltage and resistance behave in a series and a parallel circuit?
The current through each resistor is equal to the voltage across it divided by its resistance for series and parallel circuits.
What is an exception to ohm's law?
Most conductors and electronic devices are 'exceptions' to Ohm's Law. Ohm's Law only applies when the ratio of voltage to current remains constant for variations in voltage. Materials which behave in this way are termed 'linear' or 'ohmic'. But mostmaterials do not behave in this way, and are termed 'non-linear' or 'non-ohmic'.In simple terms, if you plot a graph of voltage against current, and the result is a curve, then that material does not obey Ohm's Law.
Do compound semiconductors behave as intrinsic semiconductors?
Intrinsic refers to the doping -- intrinsic semiconductors are not doped. Whether compound or not, if they are not doped they are intrinsic.
Why pure semiconductor just behave like an insulator?
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.
Why does an extrinsic semiconductor behave like an intrinsic semiconductor at high temperature?
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.
A material through which electrons do NOT easily flow is a what?
An insulator or a dielectric.AnswerInsulators behave in the way they do because they contain insufficient numbers of charge carriers to support conduction. It has nothing to do with electrons being 'unable to flow easily'!
What is an intrinsic semiconductor and what is an extrinsic semiconductor?
intrinsic semiconductor is an un-doped semiconductor, in which there is no impurities added where as extrinsic semiconductor is a doped semiconductor, which has impurities in it. Doping is a process, involving adding dopant atoms to the intrinsic semiconductor, there by gives different electrical characteristics
Do incects behave differently depending on the temperature?
yes
What is the difference between semiconductor and electronics?
A semiconductor is a device which is neither a Insulator nor a conductor. They behave like one in the right conditions.
What are the examples of p-type semiconductors?
Examples of p-type semiconductors include materials like boron-doped silicon, gallium arsenide, and aluminum gallium arsenide. These materials have a deficiency of electrons, leading to "holes" in the crystal lattice that behave as positive charges.
What is a material in which electrons do not easily flow?
An insulator is a material through which electrons do not easily flow. Insulators have a very high resistance.AnswerInsulators behave in the way they do because they contain insufficient numbers of charge curriers to support conduction. It has nothing to do with electrons being 'unable to flow easily'!
How substances behave according to kinetic theory?
i think its behaviour depends upon bonding and temperature.
How do solutes behave in a solvent?
strring , grinding, and temperature affect the speed which a solid dissolves in water.
What are the particulars of gas in oridanary conditions of temperature and pressure?
the gases behave normally a STP conditions
