Nanoscale design of multifunctional organic layers for low-power high-density memory devices

L. Nougaret, H.G. Kassa, R. Cai, T. Patois, B. Nysten, A.J.J.M. van Breemen, G.H. Gelinck, D.M. de Leeuw, A. Marrani, Z. Hu, A.M. Jonas

Research output: Contribution to journalArticleAcademicpeer-review

33 Citations (Scopus)

Abstract

We demonstrate the design of a multifunctional organic layer by the rational combination of nanosized regions of two functional polymers. Instead of relying on a spontaneous and random phase separation process or on the tedious synthesis of block copolymers, the method involves the nanomolding of a first component, followed by the filling of the resulting open spaces by a second component. We apply this methodology to fabricate organic nonvolatile memory diodes of high density. These are built by first creating a regular array of ferroelectric nanodots by nanoimprint lithography, followed by the filling of the trenches separating the ferroelectric nanodots with a semiconducting polymer. The modulation of the current in the semiconductor by the polarization state of the ferroelectric material is demonstrated both at the scale of a single semiconductor channel and in a microscopic device measuring about 80 000 channels in parallel, for voltages below ca. 2 V. The fabrication process, which combines synergetically orthogonal functional properties with a fine control over their spatial distribution, is thus demonstrated to be efficient over large areas. 

Original languageEnglish
Pages (from-to)3498-3505
Number of pages8
JournalACS Nano
Volume8
Issue number4
DOIs
Publication statusPublished - 22 Apr 2014
Externally publishedYes

Keywords

  • ferroelectric polymer
  • nanoimprint lithography
  • nonvolatile memory
  • organic electronics
  • semiconducting polymer

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