0


300 K


400 K


350 K


200 K .


                250 K 150 K 100 K


0.50


0.40


0.30


10 15


   10 1.6 N A (cm- 3


10 17


10 18


Figure 2.5.


The acceptor density dependence of the combined conductivity effective mass of holes in silicon as a function of temperature.