Digital laser printing of aluminum micro-structure on thermally sensitive substrates

Michael Zenou, Amir Sa'Ar, Zvi Kotler

Research output: Contribution to journalArticlepeer-review

39 Scopus citations

Abstract

Aluminum metal is of particular interest for use in printed electronics due to its low cost, high conductivity and low migration rate in electrically driven organic-based devices. However, the high reactivity of Al particles at the nano-scale is a major obstacle in preparing stable inks from this metal. We describe digital printing of aluminum micro-structures by laser-induced forward transfer in a sub-nanosecond pulse regime. We manage to jet highly stable molten aluminum micro-droplets with very low divergence, less than 2 mrad, from 500 nm thin metal donor layers. We analyze the micro-structural properties of the print geometry and their dependence on droplet volume, print gap and spreading. High quality printing of aluminum micro-patterns on plastic and paper is demonstrated.

Original languageAmerican English
Article number205303
JournalJournal Physics D: Applied Physics
Volume48
Issue number20
DOIs
StatePublished - 29 May 2015

Bibliographical note

Publisher Copyright:
© 2015 IOP Publishing Ltd.

Keywords

  • digital printing
  • laser-induced forward transfer
  • organic electronics
  • transparent conductive coating

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