Modern microprocessor built from complementary carbon nanotube transistors.

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ID: 50429
2019
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Abstract
Electronics is approaching a major paradigm shift because silicon transistor scaling no longer yields historical energy-efficiency benefits, spurring research towards beyond-silicon nanotechnologies. In particular, carbon nanotube field-effect transistor (CNFET)-based digital circuits promise substantial energy-efficiency benefits, but the inability to perfectly control intrinsic nanoscale defects and variability in carbon nanotubes has precluded the realization of very-large-scale integrated systems. Here we overcome these challenges to demonstrate a beyond-silicon microprocessor built entirely from CNFETs. This 16-bit microprocessor is based on the RISC-V instruction set, runs standard 32-bit instructions on 16-bit data and addresses, comprises more than 14,000 complementary metal-oxide-semiconductor CNFETs and is designed and fabricated using industry-standard design flows and processes. We propose a manufacturing methodology for carbon nanotubes, a set of combined processing and design techniques for overcoming nanoscale imperfections at macroscopic scales across full wafer substrates. This work experimentally validates a promising path towards practical beyond-silicon electronic systems.
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hills2019modernnature Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Hills, Gage;Lau, Christian;Wright, Andrew;Fuller, Samuel;Bishop, Mindy D;Srimani, Tathagata;Kanhaiya, Pritpal;Ho, Rebecca;Amer, Aya;Stein, Yosi;Murphy, Denis;Arvind, ;Chandrakasan, Anantha;Shulaker, Max M;
Journal Nature
Year 2019
DOI
10.1038/s41586-019-1493-8
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Keywords
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