A new green synthesis method of CuInS₂ and CuInSe₂ nanoparticles and their integration into thin films

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DOIResolve DOI: http://doi.org/10.1007/s11051-009-9752-5
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TypeArticle
Journal titleJournal of Nanoparticle Research
Volume12
Issue5
Pages18971903; # of pages: 7
SubjectNanoparticle; Green synthesis; Chalcopyrite; CuInS₂; CuInSe₂; Thin film; Photovoltaic; Environment
AbstractA new preparation method for CuInS₂ and CuInSe₂ nanoparticles synthesis is described without using any organic solvent. Heating Cu, In, and S/Se precursors dissolved in water for 30 min in a microwave oven in the presence of mercapto-acetic acid leads to monodispersed chalcopyrite nanoparticles. No precipitation of these nanoparticles is observed after several months at room temperature. These new materials have been thoroughly characterized to confirm their compositions, sizes, and structure without any filtration. Transmission electron microscopy (TEM) confirmed particle sizes below 5 nm. Energy dispersive X-ray analysis (EDXA) confirmed the chemical composition of these samples. X-ray diffraction (XRD) showed a chalcopyrite-type structure with crystallite size of about 2 nm. No difference has been observed between batch and continuous synthesis processes. Cu x InS₂ and Cu x InSe₂ nanoparticles, with x < 1, have been also synthesized and identified. Simulation using a commercial software confirmed the difference between copper poor (CuxInS₂) and copper rich (CuInS₂) chalcopyrite structures. Conventional spray deposition techniques have been used to form relatively thin films on solid substrates.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Institute for Chemical Process and Environmental Technology
Peer reviewedYes
NRC number52008
NPARC number15093656
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Record identifier19d13021-7b21-48f4-b70c-01479b913d45
Record created2010-04-27
Record modified2016-05-09
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