Low-temperature wet-chemical synthesis of amorphous indium sulfide powders

Reagent grade inorganic salts were used to synthesize amorphous indium sulfide powders at relatively low temperatures (⩽ 50° C). It was possible to prepare amorphous indium sulfide powders using the reaction between an acidified ( pH = 1.3) solution of indium chloride and sodium hydrosulfide (NaHS). The indium sulfide powders prepared by this process give a glass transition at 330°C and a crystallization exotherm on heating at 390°C in a DSC. Results of characterization of the amorphous and heattreated indium sulfide powders using electron microscopy (SEM, TEM), electron beam microprobe (EMPA) and X-ray diffraction (XRD) are presented.