Module 6 : PHYSICS OF SEMICONDUCTOR DEVICES
Lecture 34 : Intrinsic Semiconductors
The following table gives generally accepted values of some of the quantities associated with the three most common semiconductors at room temperature (300 K).
   
 
 
$ \Delta$
$ m_e/m_0$
$ m_h/m_0$
$ N_c$
$ N_v$
$ n_i$
 
   
in eV
/m $ ^3$
/m $ ^3$
/m $ ^3$
Si
1.12
1.08
0.56
$ 2.8\times 10^{25}$
$ 1.0\times 10^{25}$
$ 1.5\times 10^{16}$
             
Ge
0.66
0.55
0.37
 $ 1.0\times 10^{25}$ $ 6.0\times 10^{24}$
$ 2.4\times 10^{19}$
             
GaAs
1.4
0.04
0.48
 $ 4.7\times 10^{24}$ $ 7.0\times 10^{24}$ $ 1.8\times 10^{12}$
             
   
5
7
10
19
21