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        Influence of synthesis parameters on composition and morphology of electrodeposited Zn-Sb thin films

        Dominika Rajska,Kacper Motyka,Marcin Kozieł,Damian Chlebda,Agnieszka Brzózka,Grzegorz D. Sulka 한국공업화학회 2020 Journal of Industrial and Engineering Chemistry Vol.84 No.-

        The influence of bath concentration, electrodeposition potential, and hydrodynamic conditions in theelectrolytic cell on the morphology, chemical composition, and crystal structure of synthesized Zn, Sb,and Zn-Sb thinfilms was demonstrated based on FE-SEM, EDS, XRD, and Raman measurements. It wasfound that an increase in the working electrode potential leads to the formation of thinfilms with ahigher atomic percentage (at.%) of zinc. Contrary, increasing SbCl3 concentration in the citrate bath andapplication of electrolyte stirring, lead to the preferential electrodeposition of thinfilms containing ahigher content of antimony. From the point of view of thermoelectric applications, the most promisingmaterial was that containing the ZnSb crystal phase with the Zn/Sb atomic ratio of 1. The best results forelectrodeposition of Zn-Sb thinfilms were observed at1.5 V vs. Ag/AgCl (3 M KCl) in the citrate bathcontaining 0.045 M ZnCl2 and 0.045 M SbCl3 in the absence of electrolyte stirring. As a result, anamorphous ZnSb thinfilm with the Zn/Sb atomic ratio of 1.03 was obtained. The sample with acomposition very close to stoichiometric ZnSb was annealed in an inert atmosphere in order to transformit into a crystalline thinfilm.

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