Non-volatile organic memory with sub-millimetre bending radius

Richard Hahnkee Kim, Hae Jin Kim, Insung Bae, Sun Kak Hwang, Dhinesh Babu Velusamy, Suk Man Cho, Kazuto Takaishi, Tsuyoshi Muto, Daisuke Hashizume, Masanobu Uchiyama, Pascal André, Fabrice Mathevet, Benoit Heinrich, Tetsuya Aoyama, Dae Eun Kim, Hyungsuk Lee, Jean Charles Ribierre, Cheolmin Park


190 被引用数 (Scopus)


High-performance non-volatile memory that can operate under various mechanical deformations such as bending and folding is in great demand for the future smart wearable and foldable electronics. Here we demonstrate non-volatile solution-processed ferroelectric organic field-effect transistor memories operating in p- and n-type dual mode, with excellent mechanical flexibility. Our devices contain a ferroelectric poly(vinylidene fluoride-co-trifluoroethylene) thin insulator layer and use a quinoidal oligothiophene derivative (QQT(CN)4) as organic semiconductor. Our dual-mode field-effect devices are highly reliable with data retention and endurance of >6,000s and 100 cycles, respectively, even after 1,000 bending cycles at both extreme bending radii as low as 500μm and with sharp folding involving inelastic deformation of the device. Nano-indentation and nano scratch studies are performed to characterize the mechanical properties of organic layers and understand the crucial role played by QQT(CN)4 on the mechanical flexibility of our devices.

ジャーナルNature Communications
出版ステータスPublished - 4月 8 2014

ASJC Scopus subject areas

  • 生化学、遺伝学、分子生物学(全般)
  • 化学 (全般)
  • 物理学および天文学(全般)


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