DOI

With CMOS feature size heading towards atomic dimensions, unjustifiable static power, reliability, and economic implications are exacerbating, prompting for research on new materials, devices, and/or computation paradigms. Within this context, Graphene Nanorib-bons (GNRs), owing to graphene’s excellent electronic properties, may serve as basic blocks for carbon-based nanoelectronics. In this paper we build upon the fact that GNR behaviour can be controlled according to some desired functionality via top/back gate contacts and propose to combine GNRs with complementary functionalities to construct Boolean gates. To this end, we introduce a generic GNR-based Boolean gate structure, composed of two GNRs, i.e., a pull-up GNR performing the gate Boolean function and a pull-down GNR performing the inverted Boolean function. Subsequently, by properly adjusting GNRs’ dimensions and topology, we design 2-input AND, NAND, and XOR graphene-based Boolean gates, as well as 1-input gates, i.e., inverter and buffer. Our SPICE simulations indicate that the proposed gates exhibit a smaller propagation delay, from 23% for the XOR gate to 6× for the AND gate, and 2 orders of magnitude smaller power consumption, when compared with 7 nm CMOS based counterparts, while requiring a 1 to 2 orders of magnitude smaller active area footprint. These results clearly indicate that GNR-based gates have great potential as basic building blocks for future beyond CMOS energy effective nanoscale circuits.

Original languageEnglish
Title of host publicationProceedings of the 14th IEEE/ACM International Symposium on Nanoscale Architectures, NANOARCH 2018
EditorsSorin Cotofana, Georgios Ch. Sirakoulis
Place of PublicationNew York, NY, USA
PublisherAssociation for Computing Machinery (ACM)
Pages51-57
Number of pages7
ISBN (Electronic)978-1450-35815-6
DOIs
Publication statusPublished - 17 Jul 2018
Event14th IEEE/ACM International Symposium on Nanoscale Architectures, NANOARCH 2018 - Athens, Greece
Duration: 18 Jul 201819 Jul 2018

Conference

Conference14th IEEE/ACM International Symposium on Nanoscale Architectures, NANOARCH 2018
CountryGreece
CityAthens
Period18/07/1819/07/18

    Research areas

  • Carbon-Nanoele ctronics, GNR, Graphene, Graphene-based Boolean Gates

ID: 53105600