This blog is for the purpose of my class ELE431. This blog is used for discussion forum on any topics in Solid State Devices. Students may post any topics that is related to the subject.
1/16/08
Chapter 2 (cont...)
Intrinsic means n=p=ni. How about extrinsic?
57 comments:
Anonymous
said...
For extrinsic, n and p will not equal. This is because, it will depends on the concentration of electrons and holes that come from dopants.Dopants can add either electrons or holes.If dopants add more electrons while the holes constant, n becomes more.If dopants add more holes while electrons constant, p becomes more.This shows that for extrinsic,n will not equal to p. Agree? hehe..
assalamualikum w.b.t... no class ysterdy bt according to notes..extrinsic is about doping which is doping is a process of adding controlled amount of specific impurity atoms to increase n or p...
assalamualaikum.. im not yet learn extrinsic because no class yesterday.. but from the note that have given before..i will know that n and p are not equal... dopants to increase n are called donors and dopants to increase p are acceptor.. after learn this topic later..i will know more about extrinsic.. -nor aida-4B-
assalamualaikum for extrinsic semiconductor, it is different from instrinsic because n is not equal to p like in instrinsic. Extrinsic s/c is not a pure semiconductor which have going through dopping process which is adding impurities to enhance the properties of s/c likes the current flow.For n type material, the s/c was doped by material from group 5 known as donor while for p type material, the s/c was by group 3 and known as acceptor.
assalamualaikum for extrinsic semiconductor, it is different from instrinsic because n is not equal to p like in instrinsic. Extrinsic s/c is not a pure semiconductor which have going through dopping process which is adding impurities to enhance the properties of s/c likes the current flow.For n type material, the s/c was doped by material from group 5 known as donor while for p type material, the s/c was by group 3 and known as acceptor.
hi... Actually extrinsic material occurs when number of electron is not equal to number of hole... It consists of doping which is the process of adding controlled amount of specific impurity atoms in order to increase the electrons or holes.... So,an element is called as donor when n>p...and become as an acceptor when p>n.....
assalamulaikm... Extrinsic material are created by incorporating impurity atoms into the intrinsic material called doping process... The material is said to be extrinsic because by adding dopant process,it is possible for the number of electrons and holes to be unequal...that's all tq...
Salam.... In intrinsic material, n=p=ni was due to electron and hole are created simultaneosly. But in extrinsic material, the carrier concentration is depends on the doped material. If doped with the donors, n>p; if doped with the acceptors, p>n.
For extrinsic, n and p will not equal because it combination between 2 material.. It also because extrinsic will depend to dopant. If dopants to increase n are called donors and dopants to increase p are acceptor.
assalamualaikum for the extrinsic,electron concentration,n is not equal to holes concentration,p.the concentration depend on the types of dopants.there are 2 types of dopants.one is name donor and another one is acceptor.if the donor doped to the instrinsic,n>p and vice versa.. -mohd ridhuan- -EEB4A-
assalamualaikum..... in extrinsic material,n and p will not equal. The majority carrier concerntration are numbers that represent the electron that are free from the donor or hole due to acceptors. intrinsic carrier electron still exist but assumed negligible compare to the majority carrier due to dopants.
assalamualaikum.. for extrinsic,electron concentration,n will not equal to hole concentration,p because it depend on dopant.If the dopant is donor,so n is grater than p..if the dopant is acceptor,so p is grater than n.. -mohd rashdan- -EEB4A-
For extrinsic n is not equal to p.Extrinsic can include dopants which is adding an impurity element to the s/c.If dopants increase the concentration of electron and holes constant, n becomes increase and vice versa, p will increase.tQ
when an impurity atom is added into the intrinsic element,it'll become extrinsic..this process is actually to get the desired electron and hole concentration..dopants element which comes from group V will eventually increase the p(hole) concentration whereas when the acceptor from group III is added,n(electron) concentration will increase..
assalammmualaikum..In intrinsic material, n=p=ni was due to electron and hole but in extrinsic material,n and p will not equal..dopants element which comes from group V will eventually increase the p(hole) concentration whereas when the acceptor from group III is added,n(electron) concentration will increase..thank you.. khairul amin mohd sarmin 2006685728 EEB4B
An extrinsic semiconductor is a semiconductor that has been doped, into the intrinsic semiconductor for giving it different electrical properties. Doping involves adding dopant atoms to an intrinsic semiconductor, which changes the electron and hole carrier concentrations of the semiconductor. Dominant carrier concentrations in an extrinsic semiconductor classify it as either an n-type or p-type semiconductor. ~2006687969~ ~EEB4B~
After 2 weeks study this subject, ELE 431 become more interesting and I enjoy to go to class. Okay, this week, turn to explain about EXTRINSIC,…based on my understanding intrinsic material will be extrinsic when doping process happen. It is due to possible for number of electrons and holes to be unequal. The dopant atom can be either donors or acceptors. Extrinsic n ≠ p…If no > po , s/c is said to be n-type (donor, Phosphorus) while the extrinsic will be p-type when po > no (acceptor, Boron)….. Okay….=)
Salam.... Based on this chapter we will learn about the concentration of the electron and the concentration of the hole... However, if the concentration of electron does not same as the concentration of hole, the material ia called extrinsic... NUR HARDHILA OTHMAN clEEB4B 2006688089
assalamualaikum... for extrinsic,n is not equal with p.it is actually depends on the doped material or dopants.when doped with the donors,n is greater than p and vice versa when doped with the acceptors..
assalamualaikum everyone..... as i know, n & p for extrinsic is not equal.From the word extrinsic itself which mean 'not pure',we know that there's more than one type of atom in the s/c.This process is known as dopant.Dopant is a process of adding impurity atom. If the dopant process increase n, it is called donors (n>p). if the process increase p, it is called acceptors (p>n). So, n & p can not be equal.....
Assalamualaikum.. In extrinsic material the n and p concentration will not be equal. This is due to the doping process. The concentration will depends on the dopants either donors or acceptors.For donors the n concentration increases while for acceptors the p concentration increases. -Nur Amalina Binti Muhamad- -2006200184- -EEB4A-
for extrinsic material, n is not equal to p.For extrinsic material it will going through doping process which will increase the number of n or p.Dopants that increase n we called as donors which is from group 5,while dopants that increase number of p is acceptors that from group 3.
for extrinsic,..n is not equal with p..extrinses is not pure s/c which have a doping process.for n type extrinsis,the s/c was doped by group 5 as a donor such as Phosporus while for p type,s/c was doped by group 3 as a acceptor by group 3 such as Boron.we can compare this extrinsic material by energy band model and bonding model to know how acceptors and donors works. -nur amalina abu samah- -2006687713/eeb4a-
Assalamualaikum, before i start, i would like to say something which is "nice question!" .. Back to our discussion topic..
For instrinsic, number of electrons = number of holes ( n = p ).
But for extrinsic: n ≠ p .
It occurs when DOPANTS are added with a different number of valence electrons than the host. For n-type extrinsic, n >> p while for p-type extrinsic, p >> n .
As for extrinsic material, n ≠ p. This happened as we want to increase n or p by the process of Doping. Therefore, we have Donors (that increase n) and Acceptor (increase p). How Donor & Acceptor works can be seen from: 1.Bonding Model 2.Energy Band Diagram
Assalamua'laikum.. from what i understand, in intrinsic material, the concentration of electron and holes are same.. but..for extrinsic, the concentration depends on the dopant. if we doped the material with the donor, the concentration of electron is more than holes and if we doped with acceptor, the concentration of holes is more than electrons..
in intrinsic material, n=p=ni because electron and hole are created simultenously. while in extrinsic material, concentration for electron is not equal to concentration for hole because extrinsic is depend on dopant. if dopants add more hole, p becomes more and if dopants add more electron, n becomes more..
For intrinsic, n and p is equal. but, For extrinsic, n and p will not equal because it combination between 2 material.it depends on the concentration of electrons and holes that come from dopants. -nor hidayat abd ghani- -20066871213- -EEB4A-
assalamualikum.. In extrinsic semiconductor, the concentration of CB electron is not equal to the concentration of holes in the VB becausr of the adding dopants atoms. The dopant atoms can be either donors or acceptors. If n>p, a semiconductor is n type and if p>n, the material is p type.
assalamualikum... in extrinsic,the concentration of electrons are not equal to the concentration of holes.this is due to the dopant that increase the concentration electrons and holes. thank you...
extrinsic is abaout adding donor or acceptor to intrinsic material.the concentration between electron and hole will no longer same.the dopant are added to intrinsic to achive the desired concentrations
for intrisic, n=p,(numb. of electron equal to numb. of proton), for extrinsic material, n not equal to p,(numb. of electron is not equal to numb. of proton), extrinsic material is the s/c material that waas doped with dopants to achieved a desired carrier concentration.
after i learn about this topic,i knew that the different between instrinsic and extrinsic..for extrinsic it depents on the concentration of the electron and the hole from dopant
salam.. for extrinsic the carrier concentration depends to electron and hole.If n>p it said to be n-type,while p>n, the material is p-type. -nurul arina abdull razak- -2006688096-
Extrinsic means the numbers of electrons and holes are unequal. Extrinsic semiconductors are created by incorporating impurity atoms into the intrinsic material ( a process called doping). If n > p, a semiconductor is said to be n-type. If p > n, the material is p-type.
salam... basically, extrinsic happen when the no of electron and hole are not equal(n is not equal to p).this situation happened by adding dopant atoms. extrinsic sc are created by adding impurity atoms into intrinsic material.this process called doping.when n>p, a sc is said to be n-type. when p>n,a sc is said to be p-type.
salam.... from what i have learned, extrinsic mean, the concentration of hole and electron are unequal to each other, results from the doping process.. dopant to increase n is called donor and dopant to increase p is called acceptor. ~MiMi EEB4B~
Extrinsic material are created by incorporating impurity atoms into the intrinsic material called doping process...when adding dopant atom,the number of electron and hole are unequal.
57 comments:
For extrinsic, n and p will not equal. This is because, it will depends on the concentration of electrons and holes that come from dopants.Dopants can add either electrons or holes.If dopants add more electrons while the holes constant, n becomes more.If dopants add more holes while electrons constant, p becomes more.This shows that for extrinsic,n will not equal to p. Agree? hehe..
Mohd.Hasbullah
2006685529
EEB4A
assalamualikum w.b.t...
no class ysterdy bt according to notes..extrinsic is about doping which is doping is a process of adding controlled amount of specific impurity atoms to increase n or p...
assalamualaikum..
im not yet learn extrinsic because no class yesterday..
but from the note that have given before..i will know that n and p are not equal...
dopants to increase n are called donors
and dopants to increase p are acceptor..
after learn this topic later..i will know more about extrinsic..
-nor aida-4B-
assalamualaikum
for extrinsic semiconductor, it is different from instrinsic because n is not equal to p like in instrinsic. Extrinsic s/c is not a pure semiconductor which have going through dopping process which is adding impurities to enhance the properties of s/c likes the current flow.For n type material, the s/c was doped by material from group 5 known as donor while for p type material, the s/c was by group 3 and known as acceptor.
HASNOOR KHUZAIRAH BINTI HASIM
EEB4B
2006688105
assalamualaikum
for extrinsic semiconductor, it is different from instrinsic because n is not equal to p like in instrinsic. Extrinsic s/c is not a pure semiconductor which have going through dopping process which is adding impurities to enhance the properties of s/c likes the current flow.For n type material, the s/c was doped by material from group 5 known as donor while for p type material, the s/c was by group 3 and known as acceptor.
hi...
Actually extrinsic material occurs when number of electron is not equal to number of hole...
It consists of doping which is the process of adding controlled amount of specific impurity atoms in order to increase the electrons or holes....
So,an element is called as donor when n>p...and become as an acceptor when p>n.....
-Suhaida Mohamad Noor-
EEB4B
=)
assalamulaikm...
Extrinsic material are created by incorporating impurity atoms into the intrinsic material called doping process...
The material is said to be extrinsic because by adding dopant process,it is possible for the number of electrons and holes to be unequal...that's all
tq...
nurkhadijah bt zainol
EEB4B
2006687068
Salam....
In intrinsic material, n=p=ni was due to electron and hole are created simultaneosly.
But in extrinsic material, the carrier concentration is depends on the doped material.
If doped with the donors, n>p;
if doped with the acceptors, p>n.
-Nur Suhaili Binti Abdul Samad-
-EEB4B-
salam...
according to textbook..extrinsic is by adding dopant atoms,it is possible for the numbers of electrons and holes to be unequal...
hmm..tq..
-nurhidayahmuhammadhanif-
-EEB4B-
For extrinsic, n and p will not equal because it combination between 2 material.. It also because extrinsic will depend to dopant. If dopants to increase n are called donors
and dopants to increase p are acceptor.
for extrinsic,the n and p is depend on dopants...if the dopant is donor,n is greater than p and vice versa..ok?
<2006685703>
assalamualaikum
for the extrinsic,electron concentration,n is not equal to holes concentration,p.the concentration depend on the types of dopants.there are 2 types of dopants.one is name donor and another one is acceptor.if the donor doped to the instrinsic,n>p and vice versa..
-mohd ridhuan-
-EEB4A-
assalamualaikum.....
in extrinsic material,n and p will not equal. The majority carrier concerntration are numbers that represent the electron that are free from the donor or hole due to acceptors. intrinsic carrier electron still exist but assumed negligible compare to the majority carrier due to dopants.
shahrul
2006686015
EEB4A
assalamualaikum..
for extrinsic,electron concentration,n will not equal to hole concentration,p because it depend on dopant.If the dopant is donor,so n is grater than p..if the dopant is acceptor,so p is grater than n..
-mohd rashdan-
-EEB4A-
For extrinsic n is not equal to p.Extrinsic can include dopants which is adding an impurity element to the s/c.If dopants increase the concentration of electron and holes constant, n becomes increase and vice versa, p will increase.tQ
-Mohd Hafeez-
2006686054
EEB4A
when an impurity atom is added into the intrinsic element,it'll become extrinsic..this process is actually to get the desired electron and hole concentration..dopants element which comes from group V will eventually increase the p(hole) concentration whereas when the acceptor from group III is added,n(electron) concentration will increase..
-nurfadzilah-
-EEB4B-
if n more than p...its become n-type....and when n less than p, its become p-type...
there's so many equations to be use in calculations...
noor fathiyah - EEB 4B
assalammmualaikum..In intrinsic material, n=p=ni was due to electron and hole but in extrinsic material,n and p will not equal..dopants element which comes from group V will eventually increase the p(hole) concentration whereas when the acceptor from group III is added,n(electron) concentration will increase..thank you..
khairul amin mohd sarmin
2006685728
EEB4B
An extrinsic semiconductor is a semiconductor that has been doped, into the intrinsic semiconductor for giving it different electrical properties. Doping involves adding dopant atoms to an intrinsic semiconductor, which changes the electron and hole carrier concentrations of the semiconductor. Dominant carrier concentrations in an extrinsic semiconductor classify it as either an n-type or p-type semiconductor.
~2006687969~
~EEB4B~
HYE GUYS,
After 2 weeks study this subject, ELE 431 become more interesting and I enjoy to go to class. Okay, this week, turn to explain about EXTRINSIC,…based on my understanding intrinsic material will be extrinsic when doping process happen. It is due to possible for number of electrons and holes to be unequal. The dopant atom can be either donors or acceptors.
Extrinsic n ≠ p…If no > po , s/c is said to be n-type (donor, Phosphorus) while the extrinsic will be p-type when po > no (acceptor, Boron)…..
Okay….=)
\nurul mahzuzah masduki\
\eeb4b\
Salam....
Based on this chapter we will learn about the concentration of the electron and the concentration of the hole... However, if the concentration of electron does not same as the concentration of hole, the material ia called extrinsic...
NUR HARDHILA OTHMAN
clEEB4B
2006688089
assalamualaikum...
for extrinsic,n is not equal with p.it is actually depends on the doped material or dopants.when doped with the donors,n is greater than p and vice versa when doped with the acceptors..
assalamualaikum everyone.....
as i know, n & p for extrinsic is not equal.From the word extrinsic itself which mean 'not pure',we know that there's more than one type of atom in the s/c.This process is known as dopant.Dopant is a process of adding impurity atom. If the dopant process increase n, it is called donors (n>p). if the process increase p, it is called acceptors (p>n). So, n & p can not be equal.....
-ct aisah-
EEB4A
Assalamualaikum..
In extrinsic material the n and p concentration will not be equal. This is due to the doping process.
The concentration will depends on the dopants either donors or acceptors.For donors the n concentration increases while for acceptors the p concentration increases.
-Nur Amalina Binti Muhamad-
-2006200184-
-EEB4A-
for extrinsic material, n is not equal to p.For extrinsic material it will going through doping process which will increase the number of n or p.Dopants that increase n we called as donors which is from group 5,while dopants that increase number of p is acceptors that from group 3.
Nur Atharah Kamarzaman
2006688071
EEB4A
for extrinsic,..n is not equal with p..extrinses is not pure s/c which have a doping process.for n type extrinsis,the s/c was doped by group 5 as a donor such as Phosporus while for p type,s/c was doped by group 3 as a acceptor by group 3 such as Boron.we can compare this extrinsic material by energy band model and bonding model to know how acceptors and donors works.
-nur amalina abu samah-
-2006687713/eeb4a-
Assalamualaikum,
before i start, i would like to say something which is "nice question!" .. Back to our discussion topic..
For instrinsic, number of electrons = number of holes ( n = p ).
But for extrinsic: n ≠ p .
It occurs when DOPANTS are added with a different number of valence electrons than the host. For n-type extrinsic, n >> p while for p-type extrinsic, p >> n .
Mohd Ameer Yuslan Bin Razmi
2006685902
EEB4B
As for extrinsic material, n ≠ p. This happened as we want to increase n or p by the process of Doping. Therefore, we have Donors (that increase n) and Acceptor (increase p). How Donor & Acceptor works can be seen from:
1.Bonding Model
2.Energy Band Diagram
Assalamua'laikum..
from what i understand, in intrinsic material, the concentration of electron and holes are same..
but..for extrinsic, the concentration depends on the dopant.
if we doped the material with the donor, the concentration of electron is more than holes and if we doped with acceptor, the concentration of holes is more than electrons..
liyana sa'ari
EEB4B
in intrinsic material, n=p=ni because electron and hole are created simultenously. while in extrinsic material, concentration for electron is not equal to concentration for hole because extrinsic is depend on dopant. if dopants add more hole, p becomes more and if dopants add more electron, n becomes more..
-norain bt sahari-
-2006687800-
-eeb4A
For intrinsic, n and p is equal. but, For extrinsic, n and p will not equal because it combination between 2 material.it depends on the concentration of electrons and holes that come from dopants.
-nor hidayat abd ghani-
-20066871213-
-EEB4A-
extrinsic is when the hole or electron is not equal.it because a dopant..that what i know....
extrinsic..n is not equal to p
because doping process..
-shaari-
EEB4A
assalamualaikum...
to me,extrinsic is n is not equals to p...
norhaliyati norul 'azmi
2006687155
for extrinsic, n is not equal to p, concentration of electron are not equal to the concentration of hole
assalamualaikum...
EXTRINSIC opposite to INTRINSIC
2006685808
-EEB4B-
assalamualikum..
In extrinsic semiconductor, the concentration of CB electron is not equal to the concentration of holes in the VB becausr of the adding dopants atoms. The dopant atoms can be either donors or acceptors. If n>p, a semiconductor is n type and if p>n, the material is p type.
assalamualikum...
in extrinsic,the concentration of electrons are not equal to the concentration of holes.this is due to the dopant that increase the concentration electrons and holes.
thank you...
2006688231
EEB4A
extrinsic is abaout adding donor or acceptor to intrinsic material.the concentration between electron and hole will no longer same.the dopant are added to intrinsic to achive the desired concentrations
-Mohamad Haris Salleh-
_EEB4A_
for intrisic, n=p,(numb. of electron equal to numb. of proton), for extrinsic material, n not equal to p,(numb. of electron is not equal to numb. of proton), extrinsic material is the s/c material that waas doped with dopants to achieved a desired carrier concentration.
-NORDHUHA MOHD YUNUS-
-2006687889-
-eeb4a-
Assalamualaikum
For extrinsic material:
the concentration of electron,n is not equal to the concentration of proton,p
Mohd Syafiq b Md Salleh
2006686093
EEB4A
extrinsic is form from the doping process......... The value of n and p type is not the same.........
-extrinsic is a material that hve unequal concentration of hole and electron..
-an intrinsic s\c can b convert to an extrinsic s\c by doping process..
~mohd rezzuan b nasharudin~
~2006685097~
~EEB4A~
after i learn about this topic,i knew that the different between instrinsic and extrinsic..for extrinsic it depents on the concentration of the electron and the hole from dopant
Extrinsic is difference from the intrinsic.... Intrinsic happen when n=p=ni........ But extrinsic happen when ptype not same with the ntype........
salam..
for extrinsic the carrier concentration depends to electron and hole.If n>p it said to be n-type,while p>n, the material is p-type.
-nurul arina abdull razak-
-2006688096-
Nur Kamilah Ramli EEB4B
Extrinsic means the numbers of electrons and holes are unequal. Extrinsic semiconductors are created by incorporating impurity atoms into the intrinsic material ( a process called doping). If n > p, a semiconductor is said to be n-type. If p > n, the material is p-type.
salam...
basically, extrinsic happen when the no of electron and hole are not equal(n is not equal to p).this situation happened by adding dopant atoms. extrinsic sc are created by adding impurity atoms into intrinsic material.this process called doping.when n>p, a sc is said to be n-type. when p>n,a sc is said to be p-type.
salam....
from what i have learned, extrinsic mean, the concentration of hole and electron are unequal to each other, results from the doping process.. dopant to increase n is called donor and dopant to increase p is called acceptor.
~MiMi EEB4B~
Extrinsic material are created by incorporating impurity atoms into the intrinsic material called doping process...when adding dopant atom,the number of electron and hole are unequal.
2007121867
eeb4f
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