# Enhancement type nmos threshold voltage

in an enhancement type nmos when a channel is created then a depletion layer should be created under the n-channel which means electrons get a potential barrier to overcome.now is this potential barrier is included in threshold voltage??

• On the other side of the depletion region is the gate, not another depletion region. And no current should be flowing to or from the gate. – Ignacio Vazquez-Abrams Jul 3 '15 at 12:41
• between body and channel a depletion layer should be created.isn't it? – Enthusiast Jul 3 '15 at 12:47
• The channel is the depletion layer in the body. – Ignacio Vazquez-Abrams Jul 3 '15 at 12:47

To understand whats happening imagine a freshly created MOSFET a just newly put together wafer(though they are diffused with impurity but just for example lets imageine),so as you are using NMOS your substrate is P type,and Source and Drain is N type.