Pulsed laser ablation in liquids containing a complexing molecule: impact on the phase of oxide nanoparticles

摘要

In this contribution, we present the impact of complexing molecules on the growth of doped oxides nanoparticles during laser ablation in liquids. Two particular effects of complexing agents will be discussed: (ⅰ) Their ability to avoid the formation of coarse particles with broad size distributions and the formation of very unstable precipitates and (ⅱ) the growth, out of the thermodynamic equilibrium, that can lead to a blend of different phases (for a given stoichiomety) and compositions (for complex stoichiometries: ternary, quaternary...). These molecules can be tentatively used to select a crystallographic phase, but the effect on the stoichiometry is not demonstrated.