Laser-induced surface modification on LTCC materials for chemical metallization

Krisztian Kordas; Andrea Edit Pap; Jussi Saavalainen; Heli Jantunen; Pekka Moilanen; Esa Haapaniemi; Seppo Leppavuori; Laszlo Nanai

doi:10.1117/12.498990

29 April 2003 Laser-induced surface modification on LTCC materials for chemical metallization

Krisztian Kordas, Andrea Edit Pap, Jussi Saavalainen, Heli Jantunen, Pekka Moilanen, Esa Haapaniemi, Seppo Leppavuori, Laszlo Nanai

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Proceedings Volume 5118, Nanotechnology; (2003) https://doi.org/10.1117/12.498990
Event: Microtechnologies for the New Millennium 2003, 2003, Maspalomas, Gran Canaria, Canary Islands, Spain

Abstract

Low temperature co-fired ceramics (LTCCs) are mainly applied in hybride microelectronics packaging technology, whereas the fabrication of metallic conductors on LTCC materials is done by 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 some modifications in circuitry are needed. Printing also fails when deposition of thin metal films on LTCC is demanded. 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 micro-patterns and thin seed layers of Ag and Au, with a lateral resolution of a few tens of micrometers. The process is also suitable for 3D-MEMS applications. Morphological, structural and composition aspects of LTCC surfaces treated by a Nd:YAG pulses are carried out using FESEM, SEM, XRD and Raman measurements.

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Krisztian Kordas, Andrea Edit Pap, Jussi Saavalainen, Heli Jantunen, Pekka Moilanen, Esa Haapaniemi, Seppo Leppavuori, and Laszlo Nanai "Laser-induced surface modification on LTCC materials for chemical metallization", Proc. SPIE 5118, Nanotechnology, (29 April 2003); https://doi.org/10.1117/12.498990

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KEYWORDS

Copper

Silver

Metals

Plating

Ceramics

Gold

Laser processing

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