In situ synthesis of silver/chemically reduced graphene nanocomposite and its use for low temperature conductive paste

• Published in: Journal of materials science. Materials in electronics 2017-06, Vol.28 (11), p.7686-7691
• Main Authors: Feng, Bin, Gu, Xiaolong, Zhao, Xinbing, Zhang, Yu, Zhang, Tianyu, Shi, Jinguang
• Format: Article
• Language: English
• Subjects: Characterization and Evaluation of Materials; Chemistry and Materials Science; Fourier transforms; Graphene; Infrared spectra; Low temperature; Materials Science; Nanocomposites; Optical and Electronic Materials; Photoelectrons; Raman spectra; Silver; Spectrum analysis; Synthesis; Thermal analysis
• ISSN: 0957-4522; 1573-482X
• DOI: 10.1007/s10854-017-6462-0

In this work, we succeeded in the synthesis of Ag/chemically reduced graphene (Ag/G) nanocomposite by a facile in situ one-pot solvothermal route. X-ray diffraction, X-ray photoelectron spectroscopy, Raman spectra and Fourier transform infrared spectroscopy results revealed the formation of Ag and the reduction of graphite oxide to graphene during the one-pot process. Scanning electron microscopy observation indicated that spherical Ag particles with a size less than 100 nm are wrapped by graphene. The Ag/G nanocomposite was used in a low temperature conductive paste. Thermal analysis was conducted to determine the proper curing process of the Ag/G conductive paste. The Ag/G conductive paste that contains 0.6 wt% graphene exhibits low sheet resistance (22 mΩ/sq/25 µm) and good stability after cured at 150 °C for 30 min, which made us believe that the Ag/G nanocomposite is a promising candidate for conductive paste.