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Article Dans Une Revue Journal of Nano Research Année : 2022

Study of Copper Tin Selenide Nanoparticles of Milled Powder and Thin Films

Résumé

Nanoparticles Cu 2 SnSe 3 alloys were synthesized by mechanical alloying from mixtures of pure crystalline Cu, Sn and Se powders using a low cost planetary ball milling process optimizing the milling duration and the rotational speed. The properties of Cu 2 SnSe 3 (CTSe) thin films deposited by thermal evaporation from this powder on glass substrate at T s = 400°C were investigated. Powders and films were analyzed by X-ray diffraction (XRD), scanning electron microscopy(SEM), energy dispersive X-ray analysis (EDX), atomic force microscopy (AFM), to determine their microstructure, morphology, chemical compositions and root-mean-square (RMS) roughness. XRD analysis revealed that all samples crystallize in polycrystalline nature with cubic structure and lattice parameter a = 5.68 Å. The optical measurements were carried out in the [500-2500nm] wavelength range and were determined from spectral transmission data. Optical measurements showed that the deposited layers had a relatively high absorption coefficient of 10 4 cm -1 and the direct energy band gap was found to be around Eg =1.29eV. The suitable p-type conductivity of CTSe thin films was confirmed by hot probe method. Other electrical parameters (carrier concentration n p = 10.04x10 18 cm -3 , electrical resistivity ρ = 30.49x10 -2 Ω cm and mobility μ H = 94.33 cm 2 /V s) were measured at room temperature.
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Dates et versions

hal-03683603 , version 1 (31-05-2022)

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Hadjer Rekkache, Houda Kassentini, Lakhdar Bechiri, Noureddine Benslim, Abdelaziz Amara, et al.. Study of Copper Tin Selenide Nanoparticles of Milled Powder and Thin Films. Journal of Nano Research, 2022, 72, pp.67-79. ⟨10.4028/p-0069ke⟩. ⟨hal-03683603⟩
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