Formation of Pd catalyst by Nd:YAG laser irradiation for electroless copper deposition
In this study, we attempt to develop an improved approach for patterning a thin activator by decomposing palladium acetate/acetone layer on nonconductive PI substrates with the second harmonic Q-switched Nd:YAG laser, using acetone instead of toxic chloroform as solvent. In particular, we have established a simple method to identify the decomposition mechanism of palladium acetate. Our developed process can produce copper with high purity and low resistivity achieved by electroless copper deposition on this thin activator.
electroless copper deposition laser direct-writing two-step deposition process