Recent content by xunrichard

Thank you,dlgoff! That's a different way to think about it.But I don't know whether it is a metal-semiconductor junction.

Thank you! You are right. I think I got it.Thank you.

As we are told in the books，a diode can be conductive by a forward-bias of about 0.7v. Thus,current through the n region is formed by the conduction electrons（free electrons in the conduction band） toward the junction.But in the p region,current is formed by the valence electrons from holes...