Study of solid-state stability of the ZOTO binary system

The ZOTO binary system contains different compositions of zinc oxide (ZnO) and tin oxide (SnO2). These are important semiconductors and have been intensively explored for various applications. SnO2 , ZnO, and different mole ratios (70:30, 40:60, 30:70, and 20:80 SnO2 :ZnO) of the ZOTO system were prepared through proper thermal treatment in powder form. The comparative solid-state stability was investigated using thermogravimetric and differential thermal analysis (TG-DTA). The stability study showed that the SnO2 material absorbs much lower heat (Ea = –72.06 kJ/g mol) compared with ZnO and their compositions. Thus the SnO2 material shows stability at near room temperature operation. The crystallite size of the materials was estimated using XRD analysis.