Single nanosized FeO nanocrystals with photoluminescence properties

摘要

We have demonstrated a solution synthesis of crystalline FeO nanoparticles (NPs) with single nanosizes of 3-8 nm by refluxing FeCl_3 in N,N-dimethylformamide (DMF) with oleic acid, followed by hydrothermal treatment. FeO is usually formed at high temperature and/or high pressure and is stable only above 560 C. By employment of this DMF reduction method, we developed the synthesis of FeO NPs to the simplicity, lower temperature, and lower pressure of this method. We first found that the FeO NPs exhibit light blue photoluminescence. The photoluminescence properties of the FeO NPs are discussed in terms of their crystalline nature and surface characteristics.