Theory and practice of "striping" for improved ON/OFF Ratio in carbon nanonet thin film transistors

Ninad Pimparkar, Qing Cao, John A Rogers, Muhammad A. Alam

Research output: Contribution to journalArticle

Abstract

A new technique to reduce the influence of metallic carbon nanotubes (CNTs)-relevant for large-scale integrated circuits based on CNT-nanonet transistors-is proposed and verified. Historically, electrical and chemical filtering of the metallic CNTs have been used to improve the ON/OFF ratio of CNT-nanonet transistors; however, the corresponding degradation in ON-current has made these techniques somewhat unsatisfactory. Here, we abandon the classical approaches in favor of a new approach based on relocation of asymmetric percolation threshold of CNT-nanonet transistors by a technique called "striping"; this allows fabrication of transistors with ON/OFF ratio >1000 and ON-current degradation no more than a factor of 2. We offer first principle numerical models, experimental confirmation, and renormalization arguments to provide a broad theoretical and experimental foundation of the proposed method.

Original languageEnglish (US)
Pages (from-to)167-175
Number of pages9
JournalNano Research
Volume2
Issue number2
DOIs
StatePublished - Apr 27 2009

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Keywords

  • Carbon nanotube
  • Flexible electronics
  • Nanonet
  • Thin film transistors

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Materials Science(all)

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