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Issue 7, 2010
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Green synthesis of tunable Cu(In1−xGax)Se2nanoparticles using non-organic solvents

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A green synthesis route of Cu(In1−xGax)Se2 nanoparticles with variable Ga content is described in this report for the first time. Only water and a minimum amount of energy input are used. Heating appropriate amounts of Cu, In, Ga and Se dispersed in an aqueous solution containing mercapto-acetic acid in a microwave oven gives rise to small and uniform nanoparticles. These new materials have been characterized to confirm composition, geometrical and structural properties. Transmission electron microcopy (TEM) confirmed size distribution around 4 nm. XRD confirmed the chalcopyrite structure with an average crystallite size of 3 nm. Atomic concentration and oxidation states of the different elements have been investigated using X-ray photoelectron spectroscopy (XPS). UV-visible absorption characterization confirmed the tunable optical properties of these materials. The proposed synthesis is scalable for commercial production with minimal environmental impact.

Graphical abstract: Green synthesis of tunable Cu(In1−xGax)Se2 nanoparticles using non-organic solvents

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Publication details

The article was received on 28 Jan 2010, accepted on 29 Apr 2010 and first published on 27 May 2010

Article type: Paper
DOI: 10.1039/C001813A
Green Chem., 2010,12, 1248-1252

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    Green synthesis of tunable Cu(In1−xGax)Se2 nanoparticles using non-organic solvents

    L. Al Juhaiman, L. Scoles, D. Kingston, B. Patarachao, D. Wang and F. Bensebaa, Green Chem., 2010, 12, 1248
    DOI: 10.1039/C001813A

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