Table 1.
gas flow rates (sccm) |
|||||||
---|---|---|---|---|---|---|---|
sample | refractive index | deposition rate (angstroms/min) | N2O/SiH4 | 15% SiH4/Ar | N2O | N2 | NH3 |
1 | 2.0 | 320 | 0 | 24 | 0 | 225 | 50 |
2 | 1.82 | 360 | 0.13 | 24 | 3 | 225 | 50 |
3 | 1.65 | 390 | 0.67 | 24 | 16 | 225 | 50 |
4 | 1.57 | 520 | 6.46 | 24 | 155 | 225 | 50 |
5 | 1.45 | 550 | 6.67 | 24 | 160 | 225 | 50 |