title: Nanoscale design of multifunctional organic layers for low-power high-density memory devices.
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.
authors.affiliation: Bio & Soft Matter, Institute of Condensed Matter and Nanosciences, Université catholique de Louvain , Croix du Sud 1/L7.04.02, Louvain-la-Neuve 1348, Belgium.
authors.forename: Laurianne
authors.initials: L
authors.lastname: Nougaret
authors.forename: Hailu G
authors.initials: HG
authors.lastname: Kassa
authors.forename: Ronggang
authors.initials: R
authors.lastname: Cai
authors.forename: Tilia
authors.initials: T
authors.lastname: Patois
authors.forename: Bernard
authors.initials: B
authors.lastname: Nysten
authors.forename: Albert J J M
authors.initials: AJ
authors.lastname: van Breemen
authors.forename: Gerwin H
authors.initials: GH
authors.lastname: Gelinck
authors.forename: Dago M
authors.initials: DM
authors.lastname: de Leeuw
authors.forename: Alessio
authors.initials: A
authors.lastname: Marrani
authors.forename: Zhijun
authors.initials: Z
authors.lastname: Hu
authors.forename: Alain M
authors.initials: AM
authors.lastname: Jonas