Consider the heavily doped p-n junction shown to the left and then apply a reverse bias to the junction. Reverse bias brings the conduction band very close to the valence band. This brings many occupied states on the p-side into energetic alignment with vacant states on the n-side.. .
The basic requirements to drive a tunneling current are: A large number of electrons A large number of holes Separated by a narrow barrier of finite height. Keep in. .
• Failure to attain high doping or sharp junctions will result in no tunneling current. What else is important about the Zener .
As the reverse bias is increased the distance between the bands decreases. This is due to higher electric fields increasing the slopes of the bands. We assume. .
Normal lattice scattering can cause the creation of EHPs if the carrier being scattered has [pdf]
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