A direct-current reactive phase plasma-sputtering technique was used to obtain a B diffusion-source in the form of a borosilicate glass. The sheet resistance of Si was measured using a four-point probe technique, and the depth of the diffusion lyer as determined by lapping and staining. The B diffusion coefficient in Si as a unction of the B surface concentration was deduced (table 22).

Boron Diffusion from a Reactively Sputtered Glass Source in Si and SiO2. G.D.Bagratishvili, R.B.Jishiashvili, L.V.Piskanovski, Z.N.Sholashvili: Physica Status Solidi A, 1979, 56[1], 27-35

 

Table 22

Diffusion Parameters for B at 1150C

 

B2O3 at surface (/cm3)

Do (cm2/s)

Q (eV)

3 x 1018

4.5 x 104

4.84

6 x 1019

1 x 103

4.37

1 x 1020

1 x 10-2

2.95

5 x 1020

2.5 x 10-3

2.72