What is the difference between hole and electron?

Unlike an electron which has a negative charge, holes have a positive charge that is equal in magnitude but opposite in polarity to the charge an electron has. Holes can sometimes be confusing as they are not physical particles in the way that electrons are, rather they are the absence of an electron in an atom.

What is the difference between hole current and electron flow?

Current that is caused by electron motion is called electron current and current that is caused by hole motion is called hole current. Electron is a negative charge carrier whereas hole is a positive charge carrier. However, at room temperature the electrons present in the outermost orbit absorb thermal energy.

What is a hole flow?

Hole flow is very similar to electron flow except that the holes move toward a negative potential and in an opposite direction to that of the electron. However, the electrons associated with electron flow have conduction band energy and can, therefore, move throughout the crystal.

What is called electron flow?

Electron flow is what we think of as electrical current. AC is when the electrons flow in two directions, from the positive to the negative terminal and from the negative to the positive terminal, ‘alternating’ between the two directions. (Your lights will light up regardless of the direction of the electron flow.)

Why do electrons move faster than holes?

As electrons are of lighter mass than holes so their acceleration are more than that of holes which follow drift velocity inside conductor,making electron move much faster.

What do you mean by hole?

noun. an opening through something; gap; aperture: a hole in the roof; a hole in my sock. a hollow place in a solid body or mass; a cavity: a hole in the ground.

Why electrons flow opposite to current?

Coming on to the flow of electron, by their very nature, the electron will tend to flow towards the +ve side because they have -ve charge, and hence they flow opposite to the conventional direction of current flow (from +ve to -ve).

Why are holes positive?

In an applied electric field, the electrons move in one direction, corresponding to the hole moving in the other. If a hole associates itself with a neutral atom, that atom loses an electron and becomes positive. Therefore, the hole is taken to have positive charge of +e, precisely the opposite of the electron charge.

What is the process of the electron hole?

The process of electron and hole annihilation is known as recombination. If the energy released through recombination is in the form of a photon, the process is known as radiative-recombination and is most common for electrons moving fully from the conduction to the valence band.

How do electrons flow in AC current?

The electrons in an AC circuit don’t really move along with the current flow. Instead, they sort of sit and wiggle back and forth. They move one direction for 1/60th of a second, and then turn around and go the other direction for 1/60th of a second. The net effect is that they don’t really go anywhere.

Which is faster electron or hole?

Why holes are heavier than electrons?

As the hole velocity is smaller, a hole spends more time in the interaction region, i.e. holes strongly interact with phonons. This leads to larger effective mass. In scientific words, phonon renormalization of the effective mass of holes is larger than that for electrons.