The impurity in the germinium is usually in the ratio of:
Correct answer: C. 1:108
- A. 1:106
- B. 1:104
- C. 1:108
- D. 1:1010
Explanation
Germanium is a semiconductor having an indirect bandgap, as is crystalline silicon. Zone refining techniques have led to the production of crystalline germanium for semiconductors that has an impurity of only one part in 10^8 making it one of the purest materials ever obtained.
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A p-n junction forms when p-type and n-type semiconductor regions meet, creating a depletion layer, barrier potential and rectifying action. The work covers forward and reverse bias, junction current, diode characteristics, and how a diode converts alternating current into pulsating direct current through half-wave and full-wave rectification.
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