Accurate SPICE compatible CNT interconnect and CNTFET models for circuit design and simulation

SPICE compatible CNT interconnect and CNTFET models in Verilog-A hardware description language are presented in this paper. Metallic CNTs are shown to have current saturation characteristics above a threshold voltage and then modelled with piecewise linear functions. On the other hand, the CNTFET mo...

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Bibliographic Details
Published inMathematical and computer modelling Vol. 58; no. 1-2; pp. 368 - 378
Main Authors Yamacli, Serhan, Avci, Mutlu
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.07.2013
Subjects
CNT interconnect
CNTFET
Semiconductor device modelling
SPICE
SPICE
CNTFET
CNT interconnect
Semiconductor device modelling
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Summary:SPICE compatible CNT interconnect and CNTFET models in Verilog-A hardware description language are presented in this paper. Metallic CNTs are shown to have current saturation characteristics above a threshold voltage and then modelled with piecewise linear functions. On the other hand, the CNTFET model developed utilizes the calculation of the self-consistent potential of the CNT channel depending on gate and drain voltages. Unlike the previous SPICE-enabled CNTFET models using approximations and curve fittings, the proposed model employs a self-consistent method for the calculation of the channel potential in SPICE, providing more accuracy. The versatility of the CNT interconnect model and that of the CNTFET model are shown in CNT circuit simulations.
ISSN:0895-7177
1872-9479
DOI:10.1016/j.mcm.2012.11.014