

Semiconductor Principles - Technical MCQs
Q1: What electrical characteristic of intrinsic semiconductor material is controlled by the addition of impurities?A
conductivity
B
resistance
C
power
D
all of the above
ANS:A - conductivity An intrinsic semiconductor material is chemically very pure and possesses poor conductivity. It has equal numbers of negative carriers (electrons) and positive carriers (holes). A silicon crystal is different from an insulator because at any temperature above absolute zero temperature, there is a finite probability that an electron in the lattice will be knocked loose from its position, leaving behind an electron deficiency called a "hole". |


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