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Updated: Aug 16, 2026

Planar and Three-Dimensional Printing of Conductive Inks
Published on: December 9, 2011
Sub-50 nm Channel Vertical Field-Effect Transistors using Conventional Ink-Jet Printing
Tessy Theres Baby1, Manuel Rommel1, Falk von Seggern1,2
1Institute for Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz Platz 1, 76344, Eggenstein-Leopoldshafen, Germany.
Abstract:
A printed vertical field-effect transistor is demonstrated, which decouples critical device dimensions from printing resolution. A printed mesoporous semiconductor layer, sandwiched between vertically stacked drive electrodes, provides <50 nm channel lengths. A polymer-electrolyte-based gate insulator infiltrates the percolating pores of the mesoporous channel to accumulate charge carriers at every semiconductor domain, thereby, resulting in an unprecedented current density of MA cm-2 .

