Find the number densities of n-carriers

[rahulbhowmick]

Homework Statement

In silicon, Eg = 1.12 eV and the effective mass of the n-carriers is m* = 0.31me, where me is the electron mass. Find the number densities of n-carriers at 100 K and at 250 K.

Homework Equations

square root of (NcNv)*e^(-Eg/kt)

The Attempt at a Solution

The attempt is simply this equation and it isn't working. Help :)

 

[nickjer]

Does it say if it is an intrinsic semiconductor or is it assumed? Also, can we see some work.