Band theory (semiconductors) explained 

right

Thankyou for the compliment.

+Justin Huang haha - a slight microphone distortion, but yes, sounds like a soda can!

Justin Ha ha

cracking a cold one with the boys

lmao u made my day!

Justin Hunag hahahah you never let anything slide pass you

Thanks for the positive feedback.

I am from India and I like his video . You are right. Actually i study in 12th class ,ya there is some hard English word but I understood all.

Thankyou. That’s a nice compliment.

Me too! I'm currently doing this chapter. It's very interesting.

Yes, all electron holes occupied, in this element there is only one electron in the outermost shell. In other elements there could be more electrons in that shell and in turn have more states possible to be occupied. Hope this helps!

SOMEONE please answer this guy's question, it is driving me crazy

The Valence Band is the shell that contains the outermost electron in an atom in the base energy state. The Conduction Band is the shell an excited electron can move UP into while still remaining associated to its atom. An electron that absorbs enough energy to be ejected from the atom leaves the atom in an ionic state. Once a valence electron moves into the conduction band, a voltage can replace an electron in the Conduction Band with an electron from a neighboring atom. This constant movement of electrons is an electrical current. If the Valence Band and Conduction Band overlap, a Valence Electron requires little voltage to move electrons from one atom to the next. Most diagrams show the Valence and Conduction Bands overlapping within the same atom in a metal, but a better understanding is that the Conduction Bands of neighboring atoms overlap. It’s more like a group of neighboring metallic atoms share the SAME Conduction Band which is what makes them good electrical conductors. Think of a section of sidewalk. If they are right next to each other, you can still see that they are sections, but for all intents and purposes, they all make ONE sidewalk. This allows you to walk (low energy) from one to the next. These are conductors. However, if you remove every other section, you know have to jump (higher energy) from one to the next. These are insulators. If you remove every other sidewalk section, but you install a curb along side the sidewalk, you can step on one sidewalk section with one foot, and on the curb with the other foot and the next sidewalk section with your first foot. This is a semiconductor (sidewalk sections) with a dopant (curb). Without a dopant, the semiconductor is an insulator. With the dopant, the semiconductor is a conductor.

Thanks, please share ;-)

+Craig Russell I agree, excellent idea

thanks!

You’re welcome

Glad it helped.

Glad it helped ;-)

Glad it helped!

Thankyou 😀

remember, bands are actually discrete energy levels, so in terms of conductors the electrons do not need an increase of energy to become conductive - hence the overlapping of bands in that case

They are not, they just overlap each other

Glad you liked it!