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Radiation hardened micron and submicron MOSFETS containing fluorinated oxides

Conference · · IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (USA)
OSTI ID:6959469

The generation of interface traps and oxide trapped charge in fluorinated MOSFETs and MOS capacitors has been found to depend strongly on the amount of fluorine introduced. In this study, the fluorine is introduced by low energy F implantation onto the surface of the polycrystalline silicon gate electrode, followed by annealing at 950{degrees}C to diffuse F into the gate SiO{sub 2} toward the SiO{sub 2}/Si interface. The improved interface radiation hardness is attributed to the strain relaxation near the SiO{sub 2}/Si interface by fluorine incorporation. The results demonstrate the potential of this technique for future radiation hard micron and submicron MOS devices.

OSTI ID:
6959469
Report Number(s):
CONF-890723--
Journal Information:
IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (USA), Journal Name: IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (USA) Vol. 36:6; ISSN 0018-9499; ISSN IETNA
Country of Publication:
United States
Language:
English