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Electrical Conduction in Semiconductors
17 questions By Tony R. Kuphaldt
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Question 10 of 17
What effect does doping concentration have on the electrical conductivity of an extrinsic semiconductor?
Reveal answerThe more concentrated the “doping,” the greater the conductivity of the material.
Notes:A couple of technical terms are used in this question (doping, extrinsic). Be sure to ask your students what they mean, if only for the sake of review. Also, ask your students to relate their answer in terms of charge carriers.
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Question 11 of 17
What must be done to an intrinsic semiconductor to turn it into an “N-type” semiconductor?
Reveal answerA pentavalent dopant must be added to it, to create donor electrons.
Notes:Nothing much to comment on here, as this sort of question may be easily answered through research of any introductory textbook.
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Question 12 of 17
What must be done to an intrinsic semiconductor to turn it into a “P-type” semiconductor?
Reveal answerA trivalent dopant must be added to it, to create acceptor holes.
Notes:Nothing much to comment on here, as this sort of question may be easily answered through research of any introductory textbook.
