Microstructure and electrical property of laser-sintered Cu complex ink

Jeonghyeon Lee, Byoungyoon Lee, Sooncheol Jeong, Yoonhyun Kim, Myeongkyu Lee

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)


We show that highly conductive Cu films are obtainable from Cu complex ink by laser sintering. The Cu inks, synthesized using Cu formate as a precursor, were spin-coated onto polyimide substrate and scanned by an ultraviolet laser at 355 nm. The blowing of N 2 gas into the irradiated area prevented the film from being oxidized and a minimum resistivity of 1.70 × 10 -5 Ω cm was obtained. The laser-sintered film, composed mainly of nanorods, exhibited a much tighter structure than the one achieved by the typical thermal process. Although the thermal-sintered Cu film had a better crystalline quality, the minimum resistivity values available with both methods were almost identical. This is attributed to the more compact microstructure induced by laser sintering.

Original languageEnglish
Pages (from-to)42-45
Number of pages4
JournalApplied Surface Science
Publication statusPublished - 2014 Jul 15

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films


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