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Self-Heating in 28 FDSOI UTBB MOSFETs at Cryogenic Temperatures | IEEE Conference Publication | IEEE Xplore

Self-Heating in 28 FDSOI UTBB MOSFETs at Cryogenic Temperatures


Abstract:

This work studies, for the first time to the authors’ best knowledge, the self-heating (SH) effect in ultra-thin body ultra-thin BOX (UTBB) FDSOI MOSFETs at cryogenic tem...Show More

Abstract:

This work studies, for the first time to the authors’ best knowledge, the self-heating (SH) effect in ultra-thin body ultra-thin BOX (UTBB) FDSOI MOSFETs at cryogenic temperatures down to 77 K. S-parameter measurements in a wide frequency range, with the so-called RF technique, is employed to assess SH parameters and related degradation of analog figures of merit (FoMs) at different temperatures. Contrary to the expectations, the effect of self-heating on analog FoMs is slightly weaker at cryogenic temperatures with respect to room-temperature case. The extracted thermal resistance and channel temperature rise at 300 K and 77 K are of the same order of magnitude. The observed increase in SH characteristic frequency with temperature reduction emphasizes the advantage of the RF technique for the fair analysis of SH-related features in advanced technologies at cryogenic temperatures.
Date of Conference: 23-26 September 2019
Date Added to IEEE Xplore: 18 November 2019
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Conference Location: Cracow, Poland

References

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