The con-ductivity of 0.5% ATO NPs is slightly decreased
The conductivity of 0.5% ATO NPs (1.08×108 S cm1) is slightly decreased due to the reduced hole mobility. Since doping concentration could play a crucial role in tuning electronic structures and properties of the host material, we further explored the effect of doping concentration on the properties of the ATO NPs by extending the Sb concentration to a wider range (specifically, 2%, 5%, 10%, 20%, 30%, and 50%, denoting the nominal concentrations for the preparation of ATO NPs, instead of the eff