Evaluation of sweep modes for switch response on ferroelectric negative-capacitance FETs

The sweep modes of gate voltages correlate with the characteristics of ferroelectric negative-capacitance field-effect transistors. Both DC steps and AC pulse sweeps are applied to evaluate the switch response and establish a related model. The subthreshold swing (SS) is unchanged in a DC sweep spee...

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Published inApplied physics express Vol. 12; no. 7; pp. 71003 - 71009
Main Authors Chen, Kuan-Ting, Chou, Yu-Chen, Siang, Gao-Yu, Chen, Hong-Yu, Lo, Chieh, Liao, Chun-Yu, Chang, Shu-Tong, Lee, Min-Hung
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.07.2019
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Summary:The sweep modes of gate voltages correlate with the characteristics of ferroelectric negative-capacitance field-effect transistors. Both DC steps and AC pulse sweeps are applied to evaluate the switch response and establish a related model. The subthreshold swing (SS) is unchanged in a DC sweep speed range of 640 s step−1 to 267 ms step−1. An improved SS is obtained using an AC pulse sweep due to its more stimulated charge for polarization by a multiple-pulse trigger, and the related model is presented with the classical spring-mass system concept.
Bibliography:APEX-102023.R2
ISSN:1882-0778
1882-0786
DOI:10.7567/1882-0786/ab2600