Nanocrystalline chalcopyrite (CuFeS 2 ) have been synthesized using single-source precursors, CuL 2 and Cu(LH) 2 Cl 2 (where LH = monoacetylferrocene thiosemicarbazone) by pyrolysis and solvothermal decomposition methods. The nanocrystals were characterized by UV-visible spectroscopy, X-ray powder diffraction, transmission electron microscopy and energy dispersive X-ray analysis. The magnetic character was determined by the hysteresis loop. CuFeS 2 nanocrystallites prepared by the pyrolysis of CuL 2 and Cu(LH) 2 Cl 2 have a cubic phase and rod-like morphology with diameters of about 18 and 15 nm, respectively, and lengths of about 195-390 and 100-145 nm, respectively. However, CuFeS 2 nanoparticles obtained by solvothermal route from CuL 2 and Cu(LH) 2 Cl 2 , which are capped with ethylene glycol, possess a nearly spherical shape with an average grain size of 16 and 11 nm, respectively.
Copper-doped iron sulfide (Cu x Fe 1−x S, x = 0.010-0.180) thin films were deposited using a single-source precursor, Cu(LH) 2 Cl 2 (LH = monoacetylferrocene thiosemicarbazone), by aerosol-assisted chemical vapor deposition technique. The Cu-doped FeS thin films were deposited at different substrate temperatures, i.e. 250, 300, 350, 400 and 450• C. The deposited thin films were characterized by X-ray diffraction (XRD) patterns, Raman spectra, scanning electron microscopy, energy dispersive X-ray analysis (EDX) and atomic force microscopy. XRD studies of Cu-doped FeS thin films at all the temperatures revealed formation of single-phase FeS structure. With increasing substrate temperature from 250 to 450• C, there was change in morphology from wafer-like to cylindrical plate-like. EDX analysis showed that the doping percentage of copper increased as the substrate temperature increased from 250 to 450
A Convenient Synthesis of Nanocrystalline Chalcopyrite, CuFeS 2 Using Single--Source Precursors. -Nanocrystalline CuFeS2 is successfully synthesized from the single-source precursors (III) and (V) by pyrolysis and solvothermal (ethylene glycol) decomposition methods. The samples are characterized by powder XRD, UV/VIS spectroscopy, TEM, and magnetic measurements. CuFeS2 nanoparticles prepared by pyrolysis have rod-like morphology whereas those obtained solvothermally are capped with ethylene glycol, and possess a nearly spherical shape. -(DISALE, S. D.; GARJE*, S. S.; Appl.
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