NDLI: Highly conductive polymer-decorated Cu electrode films printed on glass substrates with novel precursor-based inks and pastes

Content Provider	Royal Society of Chemistry (RSC)
Author	Yeon, Dong-Hee Lee, Jaeho Byun, Younghun Choi, Yun-Hyuk Kim, Suk Jun
Copyright Year	2012
Abstract	Novel inks and pastes based on a copper(II) formate tetrahydrate precursor were formulated with controllable viscosities in the range 5000–10 000 cP for use in printed electrodes. In particular, the addition of ethyl cellulose increased the adhesion of the printed paste films to the glass substrates. For the facile fabrication of electrodes with improved performance, the formulated pastes were printed on glass substrates under ambient conditions by a doctor-blade method. The printed films were thermally sintered at 170–250 °C in air and subsequently reduced under a formic acid atmosphere. The phase and microstructural evolution of the electrode films were systematically investigated by X-ray diffraction (XRD) and cross-sectional, focused ion beam scanning electron microscopy (FIB-SEM) in each processing step. Highly adhesive, polycrystalline Cu electrode films decorated by ethyl cellulose with a vermicular microstructure and large interconnected pore channels were well formed on the glass substrates. The electrode films sintered for 1 min in air and then reduced for 5 min under formic acid atmosphere at 250 °C showed the lowest electrical resistivity of ∼8 μΩ cm (electrical conductivity of ∼125 000 Ω cm−1, equivalent to ∼22% of bulk Cu), despite their maximum porosity of 27.31%.
Starting Page	3624
Ending Page	3631
Page Count	8
File Format	HTM / HTML PDF
ISSN	09599428
Volume Number	22
Issue Number	8
Journal	Journal of Materials Chemistry
DOI	10.1039/c2jm15124c
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Cu Copper Formic acid Ethyl cellulose Sintering Acid Electrode X-ray crystallography Ion Scanning electron microscope Focused ion beam Crystallite Electrical resistivity and conductivity Porosity
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Chemistry

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