Mechanism for enhancement of electrical activation of silicon in GaAs by aluminum co-implantation
A pronounced enhancement in the electrical activation of implanted Si in GaAs is demonstrated by co-implantation of Al. The maximum enhancement ( x 2) occurs when the Si distribution is shallow, there is a separation between the Si and Al distributions with the Al being deeper, the Si and Al are imp...
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| Format: | other article |
| Language: | eng |
| Published: |
2018
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| Online Access: | http://hdl.handle.net/10183/179258 |
| Country: | Brazil |
| Oai: | oai:www.lume.ufrgs.br:10183/179258 |
| Summary: | A pronounced enhancement in the electrical activation of implanted Si in GaAs is demonstrated by co-implantation of Al. The maximum enhancement ( x 2) occurs when the Si distribution is shallow, there is a separation between the Si and Al distributions with the Al being deeper, the Si and Al are implanted at doses of 91 X 1013 cme2, and subsequent annealing of the co-implanted GaAs is performed under capless or proximity cap conditions. A model considering gettering of the oxygen present in the bulk Czochralski-grown GaAs to the implanted Al is invoked to explain the observed activation enhancement. |
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