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

Autor: Nougaret L; 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., Kassa HG, Cai R, Patois T, Nysten B, van Breemen AJ, Gelinck GH, de Leeuw DM, Marrani A, Hu Z, Jonas AM
Jazyk: angličtina
Zdroj: ACS nano [ACS Nano] 2014 Apr 22; Vol. 8 (4), pp. 3498-505. Date of Electronic Publication: 2014 Mar 25.
DOI: 10.1021/nn406503g
Abstrakt: 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.
Databáze: MEDLINE