11What free electrons and holes come together but still don't neutralize? Enna comedy panraiya?
22 Answers
11
1k.............................. lets switch over to dat question of diode...
1closing without me eh????
.... HIIIIIIIIIIIIIIIIII..........
now the thread is officially and unofficially closed...
11Thanx, machan. Doubt is cleared and the thread is officially CLOSED!
1appada................
one of d imp oneword ll be d point which u tol......
depletion region consist of immobile ions............
11oooooooooooooooooooh
Yes. Got it. electrons are mobile but since the positive/negative kernel atoms are immobile, barrier is formed right?
1becomes positive ion.............
naturally if accepts electron it becomes negative ion.......
dat wat happens here too...
the n side donates few electrons n pside accepts few electrons formin +ve n-ve ions near d barrier respectively............
1k.. tell me wat happens when an atom releases an electron??????????????
1a barrier is generally formed rit after 2 semiconductor r joined together..........
say pn junction diode........
1fr dat only i used d word recombinin...... n not neutralise........
11if they neutralize, then there will not be any potential difference!
P.S:
How's my logo? That is Aragorn in the Lord of the Rings movie :)
1since d barrier formed at d moment they r joined charges beyond it ll remain as it is...
1not all the charges ....... wat u r sayin neutralised is wat i am syin recombines......
only d charges very near to junc ll recombine..........
1wen a p material and n material are joined , very near to junction few electron frm n type n few holes frm p type recombine formin ions on boh the sides of d junction.....
this forms a barrier......
hope u kno dis also...
1semi con likk silicon n germanium have 4 valence electron..........
dopin i.e addin impurity is done 2 increase conductivity.
its called p material if trivalent inmpurity is added
the maj carrier here is holes....
its called n material if pentavalent im is added..
electron is maj carrier here....
dopin is done to increase the no of electrons n holes...
i hope u kno all these things....