Laser-induced surface activation of LTCC materials for chemical metallization

K. Kordás, A. E. Pap, J. Saavalainen, H. Jantunen, P. Moilanen, E. Haapaniemi, S. Leppävuori

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14 Citations (Scopus)


Low-temperature cofired ceramics (LTCCs) are mainly applied in hybrid microelectronics packaging technology, where the fabrication of metallic conductors on LTCC materials is done using various printing technologies. The conventional process is fast and cost-effective in the case of mass production, but too slow and difficult when repair and/or modifications of the circuitry are needed. Printing also fails when deposition of thin metal films on LTCC is required. Here, a simple laser-assisted process is presented, by which the surface of LTCCs can be activated for consecutive electroless chemical metal plating. The method enables the realization of thick high-conductance metallic Cu micropatterns and thin seed layers of Ag and Au, with a lateral resolution of a few tens of micrometers. The process is also suitable for 3-D-MEMS applications. A study of LTCC surfaces treated with Nd:YAG pulses is carried out using field emission scanning electron microscope (FESEM), SEM, X-ray diffraction (XRD) and Raman measurements.

Original languageEnglish
Pages (from-to)259-263
Number of pages5
JournalIEEE Transactions on Advanced Packaging
Issue number2
Publication statusPublished - May 1 2005



  • Copper
  • Gold
  • Laser
  • Low-temperature cofired ceramic (LTCC)
  • Metallization
  • Nanoparticle
  • Silver

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Kordás, K., Pap, A. E., Saavalainen, J., Jantunen, H., Moilanen, P., Haapaniemi, E., & Leppävuori, S. (2005). Laser-induced surface activation of LTCC materials for chemical metallization. IEEE Transactions on Advanced Packaging, 28(2), 259-263.