Select all that apply to the electron and hole populations in a semiconductor; w

ID: 1518510 • Letter: S

Question

Select all that apply to the electron and hole populations in a semiconductor; where NA: acceptor concentration and ND: donor concentration, and ni: intrinsic carrier concentration

(a) if ND is much greater than ni but less than NA then the semiconductor is p-type

(b) if ND is nearly equal to NA then the material is intrinsic

(d) if ni is less than NA but greater than ND then the semiconductor is p-type

(e) if NA is exactly equal to NA but less than ni then the semiconductor is intrinsic

Explanation / Answer

(a) if ND is much greater than ni but less than NA then the semiconductor is p-type

(c) if ND is much greater than NA then n>p

(e) if NA is exactly equal to NA but less than ni then the semiconductor is intrinsic

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Select all that apply to the electron and hole populations in a semiconductor; w

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