posted on Jan, 24 2016 @ 05:48 AM
originally posted by: UmarIbrahim
A positron can flow through p-doped elements without being annahilated. It happens in solarpanels too. Since when a photon hits a metal plate it
releases positron's and electron's the p doped layer is above n doped to avoid annahilation at a large scale( yes it can not be completly avoided)
but the better the layers quality the less annahilation. those are then transported to certain machines that by giving charges power a magnet which
moves coils and type of converts positrons to protons( the wire from a panel to the machine is made of p type for positive and n type for negative) I
hope this helps you. also, if you need more on this ask me( This is my only speciality)
Just to inform you but this is absolutely 100% incorrect
n and p semi-conductors has nothing to do with positrons and electrons being positive and negative. If it was true, all semiconductors would be
producing billions of 511keV Gammas... and... they are not.
You say p-doped elements... you do not understand what a element is, as elements in the nuclear sense are simply atoms, you dont p or n dope atoms.
Assuming you mean however you are talking about semi-conductors you are still not correct. A n dopant is something that is electron rich and, the
silicon lattice still bonds with it but, the result is an extra electron. As such, electrons are avaliable as the charge carriers through the n doped
P doped is the same except it leaves a 'hole' that is just a place in which there is an electron missing. This state can also pass through the
material as electrons can move and occupy the hole state, by leaving a hole state behind where they where originally.
In terms of quality of the semiconductor... yes the better it is, in a p-n junction, the less effects you get such as trapping or heating...but once
again, not anything to do with e+ / e- annihilation
Its got nothing to do with positrons.