Abstract
The morphology and structure of CuS crystals formed during sulfidation of copper behenate films obtained by the Langmuir-Blodgett (LB) method have been studied using high resolution electron microscopy. The average size of these crystals is about 3 nm and increases by a factor of approximately 2.2 after annealing at a temperature of 150 °C or above. Analysis of interplanar distances has shown that in the range of annealing temperatures of 150–200 °C, CuS nanocrystals have a P63/mmc hexagonal crystal lattice with parameters a = 0.38 nm and c = 1.64 nm. At annealing temperatures of 250 °C or above, the Cu2S crystalline phase begins to form, in addition to CuS nanocrystals. The proportion of this phase increases with increasing annealing temperature. Cu2S nanocrystals have a hexagonal crystal lattice type with the P63/mmc spatial group and unit cell parameters a = 0.39 nm and c = 0.68 nm. Quantitative evaluation of copper and sulfur in individual CuS and Cu2S nanocrystals was performed by local analysis of characteristic X-ray spectra.
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Original Russian Text © A.K. Gutakovskii, L.L. Sveshnikova, S.A. Batsanov, N.A. Eryukov, 2014, published in Avtometriya, 2014, Vol. 50, No. 3, pp. 108–114.
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Gutakovskii, A.K., Sveshnikova, L.L., Batsanov, S.A. et al. Electron microscopic studies of CuS nanocrystals formed in Langmuir-Blodgett films. Optoelectron.Instrument.Proc. 50, 304–309 (2014). https://doi.org/10.3103/S8756699014030157
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DOI: https://doi.org/10.3103/S8756699014030157