Specific Process Knowledge/Thin film deposition/Si sputter in Wordentec
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Silicon sputtering in the Wordentec
Silicon can be sputter deposited in the Wordentec as well as in the Sputter-System(Lesker) (details on sputtering Si in the Sputter-System Lesker here) and in the new cluster sputter system (no process details available as of March 2020).
Parameters
Listed below are tried parameters, that can be used during Si deposition in the Wordentec. The process parameters in the table below can be used as started values, run a test process to be sure that you get the right thickness.
Do not use the power more than 180 W without consulting staff, since the Si target could break into a lot of small pieces.
| Settings 1 | Settings 2 | |
|---|---|---|
| Process type | Sputtering | Sputtering |
| Power | 130W | 170W |
| Sputter pressure | 5*10-3 mbar | 1*10-2 mbar |
| Rate | About 0.7 Å/s | About 0.6 Å/s |
In November 2018 Rebecca Ettlinger and Patama Pholprasit tested Si sputter deposition in the Wordentec at 500 W with a low sputter pressure of 2*10-3 mbar together with Yannick Seis. The aim was a better uniformity of the sputtered film. See details in the process log. It is thus possible to use a higher power together with a lower pressure, but please do not do this without consulting the Thin Film group.