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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?
No, compound semiconductors do not behave as intrinsic semiconductors because they have different band structures due to the combination of different elements. Compound semiconductors have unique electrical properties that make them suitable for specific applications that require different performance characteristics compared to intrinsic semiconductors.
How semiconductors behaves at absolute temperature?
At absolute zero temperature, semiconductors behave as insulators because all energy levels are occupied and no electrons are able to move through the material. As temperature increases, electrons are excited to higher energy levels, allowing them to conduct electricity. This behavior is described by the semiconductor's band structure and can be manipulated by introducing impurities or applying an electric field.
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 semi conductors are insulators at ordinary temperature?
Semiconductors are not insulators at ordinary temperatures; they exhibit intermediate conductivity between conductors and insulators. At low temperatures, semiconductors can behave more like insulators due to reduced thermal energy allowing fewer charge carriers to move within the material. However, as temperature increases, more electrons are excited into the conduction band, increasing 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'!
Is boron likely to be an insulator?
No, boron is not likely to be an insulator. It is a metalloid with properties that are in between those of metals and nonmetals, so its conductivity can vary. Pure boron tends to behave more like a semiconductor rather than an insulator.
What are the differences between degenerate and non-degenerate semiconductors?
Degenerate semiconductors have a high concentration of charge carriers due to doping, while non-degenerate semiconductors have a low concentration. Degenerate semiconductors exhibit metallic-like conductivity and Fermi level is inside the conduction or valence band, while non-degenerate semiconductors have a well-defined band gap and behave as insulators at low temperatures.
Can a semiconductor be made to become a conductor or an insulator?
Yes, a semiconductor can be made to behave as a conductor or an insulator by controlling the amount of impurities added to it. Adding impurities through a process called doping can change the conductivity of the semiconductor material, making it act like a conductor or an insulator.
Do incects behave differently depending on the temperature?
yes
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
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.
