Figure 7. A schematic model for the size dependence of surface states in semiconductor nanoparticles. (a) (b) and (c) correspond to large size, medium size and small size of nano particle

From

Synthesis, Characterization and Thermoluminescence Studies of (ZnS)1-x(MnTe)x Nanophosphors

Deepti Pateria, Jyostna Chauhan

American Journal of Nanomaterials. 2016, 4(3), 52-57 doi:10.12691/ajn-4-3-1