The resistivity of antimony-doped germanium as a function of 1/T for several impurity concentrations. [From H. J. Fritzche, J. Phys. Chem. Solids 6, 69 (1958), modified from Figure 28.2 in N. W. Ashcroft and N. D. Mermin, Solid State Physics, Holt, Rinehart, and Winston (1976).]

resistivity of antimony-doped germanium Specimen
 
  
1
2
5
7
8
10
12
15
17
18
20
21
22
23
24
25
26
27
29
Donor
concentration
x 1014 cm-3
5.3
9.3
16
23
30
52
85
130
240
350
450
550
640
740
840
1200
1300
2700
9500