Bandgap engineering of BaTi(O _1-x S _x ) _3 as a function of sulfur concentration

R. Gómez-Rosales, E. Flores-Sigala, F. Molina-Ramírez, F. Avelar-Muñoz, H. A. Durán-Muñoz, H. Tototzintle-Huitle,J. G. Quiñones-Galván,J. J. Ortega

JOURNAL OF MATERIALS SCIENCE（2023）

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Abstract

In the present work the synthesis and characterization of BaTi(O _1-x S _x ) _3 chalcogenide system is presented. The sample was synthesized by annealing in a tubular quartz furnace through high-temperature sulfurization processes, using powdered barium titanate as the precursor and under a reactive atmosphere CS_2 . After the synthesis process, the elemental composition of the obtained samples was determined by energy-dispersed X-ray fluorescence, finding a maximum concentration of 23.9

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