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Characterization and Cu electroless plating of laser-drilled through-wafer via-holes in GaN/Al2O3
- Issue Date
- 29-5월-2009
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- GaN; Laser drilling; Cu plating
- Citation
- THIN SOLID FILMS, v.517, no.14, pp.3841 - 3843
- Indexed
- SCIE
SCOPUS
- Journal Title
- THIN SOLID FILMS
- Volume
- 517
- Number
- 14
- Start Page
- 3841
- End Page
- 3843
- ISSN
- 0040-6090
- Abstract
- GaN on Al2O3 was drilled with a high power Nd:YAG laser. Micro-Raman spectroscopy showed that the induced damage was nominal at about 15 mu m from the edge of the drilled through-wafer via-holes. Cu plating was accomplished using an electroless plating technique. FIB was employed to expose the interface between electrolessly plated Cu and GaN on the sidewall of the drilled holes, followed by SEM/EDX to confirm that the sidewall of the drilled holes was successfully covered with Cu. Cu electroless plating after laser drilling has the potential to simplify device layout and improve device integration. (C) 2009 Elsevier B.V. All rights reserved.
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