Electroless copper plating on 1,2-ethylenediamine grafted poly(ethyleneterepthalate) for the fabrication of flexible copper clad laminate

• Published in: Journal of materials science. Materials in electronics Vol. 24; no. 7; pp. 2211 - 2217
• Main Authors: Xue, Longlong, liang, Qian, Lu, Yinxiang
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01.07.2013; Springer; Springer Nature B.V
• Subjects: Applied sciences; Characterization and Evaluation of Materials; Chemistry and Materials Science; Cladding; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Copper; Copper plating; Cross-disciplinary physics: materials science; rheology; Electrical engineering. Electrical power engineering; Electrodeposition, electroplating; ELECTROLESS PLATING; Electronics; Ethanol; ETHYL ALCOHOL; ETHYLENE; ETHYLENEDIAMINE; Exact sciences and technology; FABRICATION; Grafting; Laminates; Materials; Materials Science; Methods of deposition of films and coatings; film growth and epitaxy; Optical and Electronic Materials; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Other interactions of matter with particles and radiation; Physics; PLATING; Positron annihilation; SOLVENTS; Copper Film; Copper Layer; Water Contact Angle; DMSO Solution; Electroless Plating; Interfacial layer; Water; Interlayers; Atomic force microscopy; Fourier transformation; Nucleation; Laminate; Roughness; Positron annihilation; Microelectronic fabrication; Methyl sulfoxide; Electrodeposition; Manufacturing; Infrared spectrum; Copper; Adhesive; Gold; Stratified material; Ethanol; Tape; Contact angle; Adhesion; Infrared spectrometry; Total attenuated reflection; Aqueous solution; Automatic recognition; Electroless plating; Catalyst; X-ray photoelectron spectra
• ISSN: 0957-4522; 1573-482X
• DOI: 10.1007/s10854-013-1081-x

An efficient method for the fabrication of flexible copper clad laminate (FCCL) on poly(ethyleneterepthalate) (PET) sheet by electroless plating was developed. This method relies on PET surface grafted 1,2-ethylenediamine (EDA) layer, which is employed as an adhesive interlayer for the manufacture of FCCL. Au catalysts were adsorbed on the EDA treated PET sheet and subsequently initiate the deposition of copper in an electroless plating solution. Attenuated total reflection fourier transformation infrared (ATR-FT-IR) spectroscopy, water contact angle, X-ray photoelectron spectroscopy, and atomic force microscope were employed to trace the surface changes during the grafting process with water, ethanol or dimethyl sulfoxide (DMSO) as solvent. For the PET sheets grafted from ethanol and DMSO solution, the prepared copper layers show strong adhesion to the substrate, which can pass Scotch ® tape test, while the sample grafted from water solution fail. All results indicate that using ethanol or DMSO as solvent for EDA grafting is benefit for the preparation of FCCL, and the adhesive improvements are due to an increase in the surface roughness of PET sheets and the amount of gold particles adsorbed on PET surface which act as nucleation and anchor sites for copper.