Freeze3018 said:I know holes are made/present after electron leaves its place but are holes present in metals during photo electric effects?
what is the mass of a hole (if it has any)?
Freeze3018 said:I know holes are made/present after electron leaves its place but are holes present in metals during photo electric effects?
Freeze3018 said:what is the mass of a hole (if it has any)?
Freeze3018 said:what are its characteristics are they exactly opposite of electron ( i mean its behaviour in electric and magnetic field ) ?
Holes in semiconductors are essentially the absence of an electron in the valence band. They behave as positively charged particles and can move through the material similarly to electrons.
Holes can contribute to the conductivity of semiconductors by allowing for the movement of charge through the material. When an electron moves from one atom to another, it leaves behind a hole which can then be filled by another electron, creating a chain reaction that allows for the flow of current.
The main difference between holes and electrons in semiconductors is their charge. Electrons carry a negative charge while holes carry a positive charge. Additionally, electrons are present in the conduction band while holes are present in the valence band.
Holes can be created in semiconductors through a process called doping. This involves adding impurities to the material, either by introducing atoms with fewer electrons than the semiconductor (p-type doping) or by introducing atoms with more electrons (n-type doping).
Holes themselves cannot be physically observed in semiconductors. However, their effects on the movement of charge can be observed through various experiments and measurements.