(a) The room-temperature electrical conductivity of a silicon specimen is 5.93 10-3 (-m)-1. The hole concentration...

Question:

(a) The room-temperature electrical conductivity of a silicon specimen is 5.93 × 10-3 (Ω-m)-1. The hole concentration is known to be 7.0 × 1017 m-3. Using the electron and hole mobilities for silicon in Table 18.3, compute the electron concentration.
(b) On the basis of the result in part (a), is the specimen intrinsic, n-type extrinsic, or p-type extrinsic? Why?