OAM-RC

Abstract

Sol–gel processing is a simple way of preparing chemically homogeneous, high-purity and phase-pure powders at a lower temperature. Nanometer-scale SnO2 particles have been synthesized by a simple sol–gel method. Tin oxide nanoparticles were prepapred by the sol-gel route. In a typical synthesis, a 0.05 M tin(II) chloride (SnCl4.2H2O) in deionized water was prepared and was added in 100 ml ethanol, to get equal proportions of water and ethanol, and then ultrasonic bath for 10 min. Followed by 1.5 wt % NiCl2.6H2O, Nickel chloride-6-hydrate was added as the doped source into previous solution, and then ultrasonic bath for 5 min. The coatings were prepared by spin coating the preceding solutions at 500 rpm onto glass substrates. The coating process was repeated five times. After spinning, the sample was placed on the substrate holder inside tubular furnace. Then, the samples were dried in air at 100, 200, 300, 400, 500, 600 and 700 °C for 30 min, respectively, in an electrically heated furnace. The samples were characterized by Fourier transform infrared (FTIR) spectroscopy. It is noteworthy that, no diffraction peaks corresponding to Ni oxides such as NiO are detected.

Keywords

Nanocrystalline SnO2 thin films, Band gap energy, FTIR spectroscopy.

Citation

L. S. CHUAH, M. Y. YAACOB, M. S. FAN, S. S. TNEH, Z. HASSAN, Synthesis, characterization and optical properties of Ni-doped nanocrystalline SnO2, Optoelectronics and Advanced Materials - Rapid Communications, 4, 10, October 2010, pp.1542-1545 (2010).

Submitted at: Sept. 2, 2010

Accepted at: Oct. 14, 2010