The diffusion profiles were determined at temperatures of between 950 and 1200C by using etching techniques and deep-level transient spectroscopy. The experimental conditions were particularly chosen so as to avoid O and N contamination. The resultant diffusion coefficients ranged from 5 x 10-10 to 10-8 cm2/s (table 114). These values were some two orders of magnitude greater than those which had previously been reported. The associated activation energy was 1.79eV.

Titanium Diffusion in Silicon. S.Hocine, D.Mathiot: Applied Physics Letters, 1988, 53[14], 1269-71

 

Table 114

Diffusion of Ti in Si

 

Temperature (C)

D (cm2/s)

950

5.2 x 10-10

1000

1.3 x 10-9

1050

2.2 x 10-9

1100

3.5 x 10-9

1150

7.3 x 10-9

1200

8.8 x 10-9