Organic nonvolatile memory transistors based on fullerene and an electron-trapping polymer

Toan Thanh Dao, Toshinori Matsusima, Hideyuki Murata

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

We report for the first time organic n-type nonvolatile memory transistors based on a fullerene (C60) semiconductor and an electron-trapping polymer, poly(perfluoroalkenyl vinyl ether) (CYTOP). The transistors with a Si++/SiO2/CYTOP/C60/Al structure show good n-type transistor performance with a threshold voltage (Vth) of 2.8 V and an electron mobility of 0.4 cm2 V-1 s-1. Applying gate voltages of 50 or -45 V for about 0.1 s to the devices induces the reversible shifts in their transfer characteristics, which results in a large memory window (ΔVth) of 10 V. A memory on/off ratio of 10 5 at a small reading voltage below 5 V and a retention time greater than 105 s are achieved. The memory effect in the transistor is ascribed to electrons trapped at the CYTOP/SiO2 interface. Because of the use of high-electron-mobility C60, the switching voltages of our memory transistors become significantly lower than those of conventional memory transistors based on pentacene.

Original languageEnglish
Pages (from-to)2709-2715
Number of pages7
JournalOrganic Electronics
Volume13
Issue number11
DOIs
Publication statusPublished - Jan 1 2012

Fingerprint

Fullerenes
fullerenes
Polymers
Transistors
transistors
trapping
Data storage equipment
Electrons
polymers
electrons
Electron mobility
electron mobility
Electric potential
electric potential
Threshold voltage
threshold voltage
Ethers
ethers
Semiconductor materials
shift

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry
  • Electrical and Electronic Engineering

Cite this

Organic nonvolatile memory transistors based on fullerene and an electron-trapping polymer. / Dao, Toan Thanh; Matsusima, Toshinori; Murata, Hideyuki.

In: Organic Electronics, Vol. 13, No. 11, 01.01.2012, p. 2709-2715.

Research output: Contribution to journalArticle

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