PREPARATION AND EFFECTS OF TEMPERATURE ON NANOCRYSTALLINE ITO PARTICLES SYNTHESIZED BY CO-PRECIPITATION WITH DIFFERENT SNO2 CONTENT Page No: 839-845

ZM Hanafi, FF Hammad and AM Youssef

Keywords: Indium tin oxide (ITO), nanopowders, XRD analysis, the lattice parameter, the particle size

Abstract: Indium tin oxide (ITO) nanopowders of different compositions (In: Sn = 90:10, 70:30 and 50:50) were prepared by heat treatment (300–950°C) of mixed hydroxides of In(III) and Sn(IV). The hydroxides were obtained by the reaction of aqueous NH3 mixed with aqueous solutions of In(NO3)3 and SnCl4. Two Kinds of nanocrystalline indium tin oxide (ITO) powders with different crystal structures (rhombohedral and cubic) were prepared and examined. During sintering the rhombohedral ITO was transformed to cubic around 950 °C. The lattice parameter was calculated From XRD analysis is 10.104°A and the particle size range is 19.9 - 23.1 nm.



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