SEMICONDUCTOR
SEMICONDUCTOR
Table of Content
A. What is semiconductor?
B. Examples of semiconductors.
C. Properties of semiconductor
D. History of semiconductor
E. Types of semiconductors.
F. What is intrinsic semiconductor?
G. What is extrinsic semiconductor?
H. What p type semiconductor
I. What is n type semiconductor?
J. Difference between intrinsic and extrinsic semiconductors.
K. Difference between p type and n type semiconductor.
L. Importance of semiconductor
M. Application of semiconductor
FAQS
A. What is semiconductor diode
B. What is semiconductor chip
C. What is semiconductor laser
D. What is Fermi level in semiconductor
E. Explain a conductor insulator and semiconductor using the band theory.
F. What is Rohm semiconductor
G. What is the first semiconductor plant in India
H. What is semiconductor memory
I. What is the importance of the energy gap in semiconductors?
J. What is the effect of rise in temperature on the conductivity of a semiconductor.
K. Why silicon is used in semiconductor
L. What is the hall effect in semiconductor.
M. What is drift current in a semiconductor.
N. Why Carbon is not a semiconductor.
O. Which is very high-speed semiconductor memory.
P. What is energy band in a semiconductor.
Q. What is organic semiconductor.
R. Which type of doping takes place in n type semiconductor.
S. India's first semiconductor manufacturing plant will be set up in which state.
T. Which element would you use as an impurity to make germanium an n type semiconductor.
A. What is semiconductor?
Semiconductors are different types of materials that have a conductivity of electricity among the conductors with different metals like nonconductors as well as insulators (BYJU’S Exam Prep, 2023). It also consists of electrical resistance among the metals and insulators.
B. Examples of semiconductors.
The specimen of semiconductors is “silicon, gallium arsenide, germanium”, etc. The common example is silicon and after that gallium arsenide is the second most common example of semiconductor that are commonly used in solar cells, laser diodes, and microwave circuits.
C. Properties of semiconductor
There are four properties of semiconductor
Semiconductor always shows a “negative temperature coefficient”. The resistance of the semiconductor is decreasing as the temperature increases whereas the resistance increases as per the temperature decreases (geeksforgeeks.org).
The resistivity of a semiconductor is always less as compared to the insulator.
The semiconductor behaves according to the insulator at 0-degree kelvin and the temperature increases it behaves as conductor.
when the impurities are added in the semiconductors the conductivity increases.
D. “History of semiconductor”
History of semiconductors is that it was invented in 1874 at “Bell Laboratories” in the US. Shockley invented the unique transistor in the University of Pennsylvania. The transistor computer along with the vacuum tubes was developed that were grown by leaps as a less bounds.
E. “Types of semiconductors”.
It consists of two types of “semiconductors” and they are “intrinsic semiconductors” as well as “extrinsic semiconductors”.
F. What is “intrinsic semiconductor”?
The “intrinsic semiconductors” are defined as the purest form of “semiconductors” as they do not consist of an efficient amount of impurity and they also exhibit poor “electrical conductivity”.
G. What is extrinsic semiconductor?
Extrinsic semiconductors are developed by adding different impurities to the purest forms of semiconductor. The “extrinsic semiconductor” consists of electrical power conductivity which is very high as compared with intrinsic semiconductor. It also contains electrons as well as holes that are not equal in the extrinsic semiconductor as it always depends on the type of the semiconductors.
H. What “p type semiconductor”
“P type semiconductor” is a form of “intrinsic semiconductor” which is doped with Indium as well as Boron.
I. What is “n type semiconductor”?
“n type semiconductor” is also a form of entrance semiconductor which is topped with arsenic, antimony, as well as phosphorus as a type of impurity. The electron as well as the Phosphorus are grouped in valence electrons as an impurity.
J. Difference between intrinsic and extrinsic semiconductors.
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“Intrinsic semiconductors” |
“Extrinsic semiconductors” |
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“Intrinsic semiconductors” are one of the purest form of “semiconductors”. |
“Extrinsic semiconductors” are the impurest form of “semiconductors”. |
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The density of electrons in intrinsic semiconductors are equal with the density of holes (unacademy.com). |
The density of electrons in extrinsic semiconductors is not equal with the “density of holes”. |
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The conductivity power of electricity in intrinsic semiconductors is very low. |
The conductivity power of electricity in extrinsic semiconductors is very high. |
K. Difference between “p type and n type semiconductor”.
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“p type semiconductor” |
“n type semiconductor” |
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In “p type semiconductor” impurities like aluminum as well as Indium are added in the semiconductors. |
In “n type semiconductor” impurities like “arsenic, phosphorus” as well as bismuth are added in the semiconductors. |
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The impurities are mixed in the “semiconductors” for increasing the number of holes and it is also known as “acceptor atom”. |
The impurities are added in the semiconductor for increasing the “number of electrons” hence it is also known as “Donor atom”. |
L. Importance of semiconductor
The valence electrons in the shell of electrons are considered as an elemental semiconductor which is used for defining its conductivity and this process makes the semiconductor align with the modern technology (BYJU’S Exam Prep, 2023). The semiconductors are used as integrated circuits, solar cells, as well as transistors and without these the materials of the computer would not exist.
M. Application of semiconductor
The reliability of the semiconductor is done at very low cost and is controlled by the conduction of electricity which is ideally used for different purposes in different devices. It is used in transistors, diodes, microcontroller chips, for generating electricity as all these metals are created using semiconductors.
FAQS
A. What is “semiconductor diode”
A “semiconductor diode” is also known as “p-n junction diode” as it is a device consisting of two terminals that helps in conducting the current through one direction only.
B. What is semiconductor chip?
The semiconductor chip is also called as integrated chips and it is a very important component in the digital world as it consists of numerous applications that includes electronics, electrical appliances, automobile Industry, transportation, Healthcare as well as artificial intelligence systems.
C. What is semiconductor laser?
The semiconductor laser is a diode in which the active medium of forward biased diode of PN junction. The junction is also used as a form of interface in which the P type semiconductors are creating an access number of holes whereas the end type semiconductors are creating an access number of electrons.
D. What is “Fermi level” in semiconductor?
The “Fermi level” in a semiconductor is defined by creating the highest number of energy levels of an electron that has occupied the electron in absolute zero temperature. The f”ermi level” is consistent among the “valence band” as well as the “conduction band” as the electrons are situated in the lower energy state.
E. Explain a conductor insulator and semiconductor using the band theory.
According to the band theory the electrons of the insulators are diverse from the “conduction band” through a huge gap whereas in conductors the “valence band” is overlapping the “conduction band” and a “semiconductor” express the gap among the balance as well as the “conduction band” which is very small so that the thermal power could bridge the gap.
F. What is Rohm semiconductor?
Rohm semiconductor is designed as well as manufactured various semiconductors using integrated chips and different electronic components. the components are adjusted in the ever-growing wireless system in the dynamic environment for auto motivating the electronic market with the customers.
G. What is the first semiconductor plant in India?
The first semiconductor plant in India was created by Tata electronics collaborating with a Taiwanese organization in the “power Chip Semiconductor manufacturing Corporation” in Gujarat.
H. What is semiconductor memory?
The semiconductor memory is a type of device in which the device is adjusted for storing the data and it is done with two data storage mediums for utilizing the optical and magnetic power for storing the information.
I. What is the importance of the “energy gap in semiconductors”?
The energy gap in the solid is considered as a difference in energies among the electron conduction band as well as the valence band. Due to the energy gap the amount of doping is decreased and the semiconductors are easily converted into conductors.
J. “What is the effect of rise in temperature on the conductivity of a semiconductor”.
The temperature increases and the electrons get more energy so that they can jump from the “conduction band” towards the “valence band” and therefore it helps in increasing the conductivity of the semiconductor.
K. Why silicon is used in semiconductor?
Silicon consists of low resistivity So it is used in the form of a semiconductor so that it doesn't break under high temperature.
L. What is the hall effect in semiconductor?
The effect in the semiconductor is the deflation of the holes in “n type semiconductor” in which the current is flowing perpendicularly with the magnetic field.
M. What is drift current in a semiconductor?
The drift current in a semiconductor is considered as the electric current which is caused by the particles full by the current in an electric field.
N. Why Carbon is not a semiconductor.
Carbon is not a semiconductor as the forbidden energy gap in the element carbon is around 7eV.
O. Which is very high-speed “semiconductor memory”.
“Cache memory” is defined as a very high-speed semiconductor memory which could match the speed up to the CPU.
P. What is energy band in a semiconductor?
The energy band in semiconductors is consistent with energy among the “balance band” as well as the “conduction band” and the electrons could jump to the “conduction band” but could not come back in form of conductors again.
Q. What is organic semiconductor?
The organic semiconductors are considered as molecular materials with a density of the fermi energy as well as an energy gap among the highest occupied states as well as lowest on occupied states.
R. Which type of doping takes place in “n type semiconductor”.
The “end type semiconductor” is a form of “intrinsic semiconductor” which is dropped with the impurities of the materials like phosphorus (P), antimony (Sb), as well as arsenic (As).
S. “India's first semiconductor manufacturing plant will be set up in which state”.
The first semiconductor plant that would be manufactured in India will be set up in Dholera in Gujarat.
T. Which element would you use as an impurity to make germanium an n type semiconductor.
Phosphorus (P), antimony (Sb), as well as arsenic (As)could be used as an impurity to make Germanium as an n type semiconductor.