SEM images and the calculated particle sizes. Images of AZOY nanoparticles calcined at 600 °C for 2 h: (a) AZO:Y0, (b) AZO:Y0.1, (c) AZO:Y0.15, and (d) AZO:Y0.2. (e) The plot of the particle sizes calculated from (a to d) SEM images as a function of Y2O3 content.
Yang et al. Nanoscale Research Letters 2012 7:481 doi:10.1186/1556-276X-7-481