@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

@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?

@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?