High Speed C-MOS IC Using Buried SiO 2 Layers Formed by Ion Implantation

Buried SiO 2 layers were formed by oxygen-ion( 16 O + ) implantation into silicon. The impurity distribution of the oxygen-implanted silicon substrate was analyzed by Auger spectroscopy. The properties of the buried SiO 2 layers were investigated by infrared spectra, C-V characteristics, dielectric...

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Veröffentlicht in:Japanese Journal of Applied Physics 1980-01, Vol.19 (S1), p.151
Hauptverfasser: Izumi, Katsutoshi, Doken, Masanobu, Ariyoshi, Hisashi
Format: Artikel
Sprache:eng
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Zusammenfassung:Buried SiO 2 layers were formed by oxygen-ion( 16 O + ) implantation into silicon. The impurity distribution of the oxygen-implanted silicon substrate was analyzed by Auger spectroscopy. The properties of the buried SiO 2 layers were investigated by infrared spectra, C-V characteristics, dielectric strength, dielectric constants, and refractive indices. The epitaxially-grown silicon layer on the buried SiO 2 layer showed a good monocrystalline state. MOS devices were fabricated using the epitaxial silicon layer, and the field effect mobilities of holes and electrons were 240 and 610 cm 2 /V· s, respectively, for 5 V gate bias. 21-stage C-MOS ring oscillators with effective channel length of 3.1 µm were fabricated. The propagation delay time and the dissipation power were 0.83 ns/stage and 0.33 mW/stage, respectively, for 5 V operation of the oscillators.
ISSN:0021-4922
1347-4065
DOI:10.7567/JJAPS.19S1.151