Laser-induced site-selective silver seeding on polyimide for electroless copper plating
2006; Elsevier BV; Volume: 253; Issue: 3 Linguagem: Inglês
10.1016/j.apsusc.2006.02.039
ISSN1873-5584
AutoresDongsheng Chen, Qinghua Lu, Yan Zhao,
Tópico(s)Copper Interconnects and Reliability
ResumoAg particles were generated on Ag+-doped polyimide film by laser direct writing, followed by selective copper deposition using the metallic silver particles as seeds. Laser irradiation caused in situ reduction and agglomeration of silver on the polyimide film. The copper lines were less uniform and compact with higher scanning velocity and the width of the deposited copper line could reach 25 μm. Equations of the relationship between scanning velocity and connectivity of the deposited copper patterns have been derived. The process was characterised by AFM, XPS, SEM, and semiconductor characterisation system.
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