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Explanation of band diagram of MOSFET

 
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Feb4-12, 01:59 PM   #1
 

Explanation of band diagram of MOSFET


Why the voltage drop across the insulator is linear in the band diagram of a MOSFET??
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Feb4-12, 09:09 PM   #2
 
Quote by ohopu View Post
Why the voltage drop across the insulator is linear in the band diagram of a MOSFET??

It's because the oxide is considered to have no current and no charge; therefore, from Gauss Law: dE/dx = ρ/ε = 0... ergo E = constant. As dV/dx = E, V is linear with distance.
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