Microstructural, electrical and optical properties of indium tin oxide (ITO) nanoparticles synthesized by co-precipitation method

作者：Senthilkumar V; Senthil Karuppanan; Vickraman P^*

来源：Materials Research Bulletin, 2012, 47(4): 1051-1056.

DOI：10.1016/j.materresbull.2011.12.040

• Semiconductors
• Chemical synthesis
• X-ray diffraction
• Electrical properties
• Optical properties

In the present study, the synthesis of Tin doped indium oxide (ITO) nanopowder at different compositions (In/Sn = 0, 5, 10, 15 at %) was carried out by co-precipitation method. The decomposition of precipitated indium tin acetylacetonate precursor to form In2O3-SnO2 (Sn1-xInxO2) at 400 degrees C was confirmed by the thermal and FTIR studies. The changes in strain and grain size of the synthesized particle with respect to dopant concentration were determined from the X-ray diffraction (XRD) analysis. Transmission electron microscopy (TEM) images support to confirm the grain size. The optical properties on ITO nanoparticles were analyzed with UV-visible spectroscopy, and band gap was found to vary from 3.62 to 3.89 eV with Sn dopant concentration. This variation was ascribed to the quantum confinement effect.

• 出版日期2012-4