Timeline for The nature of a PN junction - Whats preventing full 'diffusion' of electrons?
Current License: CC BY-SA 3.0
13 events
| when toggle format | what | by | license | comment | |
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| May 11, 2017 at 14:00 | vote | accept | Physco111 | ||
| S May 11, 2017 at 10:47 | history | suggested | Pritt says Reinstate Monica | CC BY-SA 3.0 |
Removed all caps
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| May 11, 2017 at 8:57 | review | Suggested edits | |||
| S May 11, 2017 at 10:47 | |||||
| May 11, 2017 at 8:18 | answer | added | Pritt says Reinstate Monica | timeline score: 2 | |
| May 9, 2017 at 20:32 | history | edited | Physco111 | CC BY-SA 3.0 |
Added more detail into my question, hopefully making it clearer
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| May 8, 2017 at 16:17 | comment | added | Physco111 | @PrittBalagopal I'm really sorry for bothering you all the time, but you're the closest I've gotten to an answer. What I'm trying to understand is why can't the extra electron in the negative boron ion, take up the holes to the left of it in the P (where I've drawn the red arrow in the 2nd diagram). Shouldn't that then allow another conducting electron to take up the hole in the positive ION? And can't this process keep happening till it's fully diffused? I'm still learning all this, this question is more out of curiosity. If you dont want to keep answering me it's fine. THANK you for your res | |
| May 8, 2017 at 15:49 | comment | added | Pritt says Reinstate Monica | @Physco111 Please refer a textbook on semiconductors, you should know that a barrier potential exists between the p side and n side, which prevents further movement. | |
| May 8, 2017 at 15:22 | comment | added | Physco111 | @PrittBalagopal So why then does a PN junction even exist? Shouldn't all the conduction electrons in the N side take up all the holes in the P side? | |
| May 8, 2017 at 2:54 | comment | added | Pritt says Reinstate Monica | @Physco111 PN junctions have conduction electrons in n side fill up the holes in p side. | |
| May 7, 2017 at 23:46 | comment | added | Physco111 | @PrittBalagopal Can you explain how the PN junction works then? What's stopping the electron on the ion from moving to the hole like you said? | |
| May 7, 2017 at 15:25 | comment | added | Pritt says Reinstate Monica | I don't understand what you are asking. Electrons from covalent bonds are the ones that delocalized holes. Energy level of acceptor impurity is close to valence band energy, which permits electron from a nearby covalent bond to fill it, and remove hole. | |
| May 7, 2017 at 15:25 | comment | added | Jon Custer | Well, that is how holes move. | |
| May 7, 2017 at 13:25 | history | asked | Physco111 | CC BY-SA 3.0 |