Figure 1: AZO and ITO nanocrystals structural heterogeneity.
From: Direct observation of narrow mid-infrared plasmon linewidths of single metal oxide nanocrystals

Transmission electron micrographs of (a) AZO with an average diameter of ∼30 nm and (b) ITO with an average diameter of ∼15 nm. Scale bars, 20 nm. Histograms of (c) shape and (d) size distributions indicate that the ITO nanocrystals are smaller, more spherical, and more uniform in shape and size than the AZO nanocrystals.