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$$^{30}$$Si-enriched thin film for local neutron transmutation doping

Yamada, Yoichi; Yamamoto, Hiroyuki; Oba, Hironori  ; Sasase, Masato*; Esaka, Fumitaka  ; Yamaguchi, Kenji; Udono, Haruhiko*; Shamoto, Shinichi  ; Yokoyama, Atsushi; Hojo, Kiichi

$$^{30}$$Si in natural Si has been widely used for a doping source, since $$^{30}$$Si can be transmuted into $$^{31}$$P by thermal neutron (Neutron Transmutation Doping, NTD). In the present study, $$^{30}$$Si-enriched thin film has been fabricated in order to demonstrate the local NTD. The $$^{30}$$Si-enriched film with thickness of 100 nm was deposited on the Si(100) substrate by plasma enhanced chemical vapor deposition using $$^{30}$$Si-enriched SiF$$_{4}$$ as the source gases. Nanostructure of films and changes of electronic properties by the neutron irradiation will be discussed.

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