Answer to Question #297567 in Physical Chemistry for Karthi

Question

Assume that gallium arsenide has dopant concentration of N d =1*10^ 13 cm^ -3 and Na 2.5*10^ 13 cm^ -3 at T = 300K (n = 1.8 X 10¹6 cm3, electron's mobility = 8500 and hole's mobility = 400). Find the following

a) Is this material being p-type or n-type?

b) What is the hole's concentration?

c) What is the electrons concentration?

d) Find the conductivity due to majority carriers.

e) Find the conductivity due to minority carriers.

Answer 1

a) p-type