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Issue 36, 2010
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Cu2X(OH)3 (X = Cl, NO3): synthesis of nanoparticles and its application for room temperature deposition/printing of conductive copper thin-films

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Abstract

Uniform Cu2Cl(OH)3 and Cu2(NO3)(OH)3 nanoparticles are firstly prepared and characterized based on various analytical tools (i.e. DLS, SEM, XRD, FT-IR, UV-Vis, and DTA-TG). Accordingly, Cu2Cl(OH)3 and Cu2(NO3)(OH)3 exhibit mean diameters of 51 nm and 37 nm, respectively. Both nanomaterials show a bright green colour with the maxima of absorption at 505 nm (Cu2Cl(OH)3) and 503 nm (Cu2(NO3)(OH)3). Thermally Cu2Cl(OH)3 and Cu2(NO3)(OH)3 decompose below 600 °C and 240 °C, respectively, to form CuO. In addition, as-prepared Cu2Cl(OH)3 and Cu2(NO3)(OH)3 nanoparticles can be reduced to form copper metal at room temperature. While depositing/printing suspensions of the as-prepared nanoparticles in ethanol on silicon wafers, glass plates or paper, NaBH4-driven reduction leads to highly conductive copper thin-films. Namely these thin-films exhibit sheet resistances of 3–10 Ω and specific resistances of 1.3–4.3 × 10−3 Ω cm, which matches with the resistivity of bulk copper metal (1.7 × 10−3 Ω cm).

Graphical abstract: Cu2X(OH)3 (X = Cl−, NO3−): synthesis of nanoparticles and its application for room temperature deposition/printing of conductive copper thin-films

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Article information


Submitted
12 Mar 2010
Accepted
14 Jul 2010
First published
10 Aug 2010

J. Mater. Chem., 2010,20, 7694-7699
Article type
Paper

Cu2X(OH)3 (X = Cl, NO3): synthesis of nanoparticles and its application for room temperature deposition/printing of conductive copper thin-films

S. Wolf and C. Feldmann, J. Mater. Chem., 2010, 20, 7694
DOI: 10.1039/C0JM00681E

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