Study of the Oxidation Process of Crystalline Powder of In2S3 and Thin Films Obtained by Dr Blade Method

Abstract

Good quality In2S3 films were grown by Dr Blade method from a powder synthesized in a chemical bath, and oxidized to obtain In2O3 films and films of intermediate composition. The oxidation process and kinetics are studied by means of thermogravimetric analysis, which shows complex phenomena.The study is completed by scanning electron microscopy and EDX measurements. X-ray diffraction and UV-visible spectroscopy results are also shown. The oxidation process begins significantly above 420 C, and it appears that at least one intermediate crystal phase takes place in the solid solution, suggesting that the replacement of sulfur by oxygen atoms occurs at different temperatures in the different crystallographic sites. The obtained samples show a band gap varying continuously between 1.94 eV and 3.72 eV.

Physical and Dielectric Properties of Ni-Doped In2S3 Powders for Optical Windows in Thin Film Solar Cells

“…In fact, some of the synthesis methods used in our research are relatively complex to manipulate, and a few are costly and time-consuming. Besides our own studies, many other researchers are interested in investigating In 2 S 3 powders [ 21 , 22 ]. Hamici M. et al [ 21 ] studied the oxidation process of the crystalline powder of In 2 S 3 and thin films obtained by the Dr. Blade Method.…”

“…Besides our own studies, many other researchers are interested in investigating In 2 S 3 powders [ 21 , 22 ]. Hamici M. et al [ 21 ] studied the oxidation process of the crystalline powder of In 2 S 3 and thin films obtained by the Dr. Blade Method. They obtained samples showing a band gap varying continuously between 1.94 eV and 3.72 eV and films of intermediate composition.…”