The energy band diagrams for three semiconductor samples of silicon are as shown. We can then assert that
Text Solution
Verified by ExpertsThe correct answer is:
D
In sample x no impurity level seen, so it is undoped. In sample y impurity energy level lies below the conduction bond so it is doped with fifth group impurity.
In sample z, impurity energy level lies above the valence band so it is doped with third group impurity.
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