A material is made from Al,Ga,and As.The mole fraction of each element is 0.25,0.26,and 0.49,respectively.This material would be
A)a metallic conductor because Al is present
B)an insulator
C)a p-type semiconductor
D)an n-type semiconductor
E)none of the above

Question

Quizplus · Accepted Answer

The material described is likely a semiconductor due to the presence of Gallium (Ga) and Arsenic (As), which are commonly used in semiconductor materials. The specific mole fractions suggest a compound that is not purely metallic (Aluminum, Al, being the metallic component) and not an insulator. The presence of Gallium, which has one less valence electron than Arsenic, suggests that the material would be p-type. P-type semiconductors are created by introducing an element with fewer valence electrons than the semiconductor material, creating "holes" or positive charge carriers.

A Material Is Made from Al,Ga,and As