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Inkjet Printing of Functional Electronic Memory Cells: A Step Forward to Green Electronics.

Iulia Salaoru1, Salah Maswoud2, Shashi Paul3

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This study introduces inkjet printing for creating electronic memory cells using silver and PEDOT:PSS. This additive manufacturing approach offers a greener alternative to traditional high-temperature electronics production.

Keywords:
PEDOT:PSSfunctional materialsgreen processesinkjetmemory cellsprintingsilver

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Sustainable Manufacturing

Background:

  • Growing environmental concerns regarding electronic waste and traditional manufacturing processes.
  • Current electronic device fabrication relies on high temperatures, generating hazardous chemicals and radiation.
  • Need for sustainable alternatives in functional material production and electronic device manufacturing.

Purpose of the Study:

  • To explore additive layer manufacturing, specifically inkjet printing, as an innovative pathway for functional electronic materials.
  • To develop and characterize a fully printed two-terminal electronic memory cell.
  • To address the environmental footprint of the electronics industry through novel manufacturing techniques.

Main Methods:

  • Utilizing a piezoelectric inkjet printer (Epson Stylus P50) to deposit inkjetable materials: silver (Ag) nanoparticles and poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS).
  • Printing individual layers of Ag and PEDOT:PSS, followed by fabrication of a Metal (Ag)/Active Layer (PEDOT:PSS)/Metal (Ag) crossbar memory architecture.
  • Evaluating printed multi-layer quality using optical microscopy and scanning electron microscopy (SEM).
  • Performing electrical characterization of the printed memory elements with an HP4140B picoammeter.

Main Results:

  • Successful printing of individual Ag and PEDOT:PSS layers with evaluated quality via microscopy.
  • Fabrication of a functional Ag/PEDOT:PSS/Ag printed electronic memory cell.
  • Demonstration of electrical characteristics of the printed memory devices.

Conclusions:

  • Inkjet printing is a viable additive manufacturing method for producing functional electronic materials like silver nanoparticles and PEDOT:PSS.
  • A fully printed two-terminal electronic memory cell can be successfully fabricated using this technology.
  • This approach presents a promising, environmentally conscious alternative to conventional high-temperature electronic manufacturing.