0
This is called "Recombination"
Wiki User
∙ 15y ago
Add your answer:
Earn +20 pts
How the hole moves?
A hole is a place where an electron is missing. If an electron moves into that places, the electron will be missing somewhere else - the hole has moved along.A hole is a place where an electron is missing. If an electron moves into that places, the electron will be missing somewhere else - the hole has moved along.A hole is a place where an electron is missing. If an electron moves into that places, the electron will be missing somewhere else - the hole has moved along.A hole is a place where an electron is missing. If an electron moves into that places, the electron will be missing somewhere else - the hole has moved along.
What is the mass of electron hole?
Simply, that's because in most semiconductor materials when an electric field is applied the holes have lower mobility than that of the electrons which means the hole effective mass is larger than the electron effective mass. And you can clearly see the effect of that in semiconductor nanocrystals (or as they called sometimes "quantum dots"), the energy levels in the conduction band are further apart than what they are in the covalent band due the fact that the effective hole mass is larger .... Good luck Physics PhD student, University of Toledoooo!
What process is the opposite of thermal generation of electron hole pairs?
Recombination
In a photocell what is the charge of a hole?
The charge of a "hole" is positive (+ive), it is the lack of an electron (negative/-ive) to make the atom "neutral".
What fills the electron hole in photsystem 1 and 2?
In photosystem 2- water(photolysis) In photosystem 1 - electron from photosystem 2
When an electron is displaced in a semiconductor the hole thats left behind is what?
When an electron is displaced in a semiconductor, the hole that is left behind is called an electron hole. Energy can still be conducted because other electrons can and do jump to the space left by a displaced electron.
How the hole moves?
A hole is a place where an electron is missing. If an electron moves into that places, the electron will be missing somewhere else - the hole has moved along.A hole is a place where an electron is missing. If an electron moves into that places, the electron will be missing somewhere else - the hole has moved along.A hole is a place where an electron is missing. If an electron moves into that places, the electron will be missing somewhere else - the hole has moved along.A hole is a place where an electron is missing. If an electron moves into that places, the electron will be missing somewhere else - the hole has moved along.
Explain with the help of diagram how free electrons and hole contribute to electric current?
explain with the help of diagram how free electron and hole contribute to electric curent
Differnce between holes and electron?
Electron: It is a negative charged elementary particle. Hole: The vacant seat of electron is called hole. It can attract an electron jumping to holes. Therefore, location of holes keep changing. it is not an ion because it is created without the removal of electron.
What is the mass of electron hole?
Simply, that's because in most semiconductor materials when an electric field is applied the holes have lower mobility than that of the electrons which means the hole effective mass is larger than the electron effective mass. And you can clearly see the effect of that in semiconductor nanocrystals (or as they called sometimes "quantum dots"), the energy levels in the conduction band are further apart than what they are in the covalent band due the fact that the effective hole mass is larger .... Good luck Physics PhD student, University of Toledoooo!
What is need to study about hole curren when there is actually electron current which is involved?
actually it is the holes which lead to the movement of the electron,as electron moves to the hole's place creating a hole behind.
Why hole has positive charge?
A hole is a place where an electron is missing. Since the electron has a negative charge, the lack of an electron produces a net positive charge.
What is the term for a semiconductor that is missing electronic?
p-type semiconductor A semiconductor that is missing electrons is called an electron hole.
What is the the term for a semiconductor that is missing electrons?
p-type semiconductor A semiconductor that is missing electrons is called an electron hole.
What is the term for a semiconductor that is missing electrons?
p-type semiconductor A semiconductor that is missing electrons is called an electron hole.
When an electron is displaced in a semiconductor the hole that left behind is?
A lack of electron
Why is the mobility of electrons greater than the mobility of holes?
In an intrinsic semiconductor, a few electrons get thermally excited and break from their valence bond to become a free electron. This leaves behind a vacancy in its place called 'hole'. In a P-type semiconductor, B with 3 electrons replaces a Si atom with 4 electrons in the lattice. 3 covalent bonds are formed by B with 3 neighbouring Si. But there is a deficiency of one electron in B for bonding with the 4th Si. This deficiency/vacancy is called a hole. When an electric potential difference is present, the electrons from adjacent valence bond moves into the vacancy near it while moving along the potential. The following represents the movement of valence electron. Terminology: * represents valence electron _ represents hole A is -ve and B is +ve. ..I A * * * _ * * * B .II A * * _ * * * * B III A * _ * * * * * B .IV A _ * * * * * * B I- Hole is at the 4th position. II- At first, the 3rd electron from left shifts right to fill the vacancy and leaves behind a vacancy in its place. The vacancy is at the 3rd position. III- Next, the 2nd electron from left has shifted to the 3rd place and filled up that vacancy but leaves a vacancy at its place. The vacancy is at 2nd position. IV- Now, the 1st electron from left moves to occupy the vacancy at the 2nd position creating another vacancy in its own place. The vacancy is at 1st position. As the electrons moved right, the vacancy moved left. The vacancy is called a hole (just a shorter name for convenience). The movement of holes is really the movement of electron in the valence band. Therefore, the mobility of a hole is indirectly the mobility of valence electrons. Mobility is the velocity acquired per unit electric field. In the intrinsic and N type semiconductors, many free electrons are present i.e. electrons in conduction band which are free to move in the crystal as against valence electrons which can only move in the lattice points. When an electric field is applied, both the valence electrons and the free electrons move in the same direction. The hole direction is opposite to that of valence electron but the mobility is the same, as explained earlier. Even for the same electric field, valence electrons cannot move as freely as the free electrons because its movement is restricted. Therefore, the velocity of valence electrons is less compared to free electrons. In other words, the velocity of holes is less compared to free electrons. This means mobility is also less for a hole compared to free electron. Thus, mobility of a free-electron (often abbreviated as 'electron') is greater than that of a hole (indirectly referring to valence electron).
