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Chalcopyrite CuInGaSe 2 (CIGS) nanoparticles for solar cell were successfully synthesized by using a relatively simple and convenient elemental solvothermal route. From the reactions of elemental Cu, In, Se and Ga powders in an autoclave with ethylenediamine as a solvent, spherical CIGS nanoparticles with diameter in the range of 30–80 nm were obtained at temperatures in the range of 180–280...
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