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 |