Europium nitride (EuN) is a half-metallic material. It is a member of the rare-earth-nitride (REN) family. In its bulk, EuN has an oxidation number of three. However, it is very prone to oxidation. For example, it is easily oxidized in air. This property of EuN makes it suitable as an activator for luminescent materials.
The magnetic properties of EuN are of particular interest. It has a ferromagnetic behavior at low concentrations and a Curie temperature of 120 K. X-ray absorption shows that the structure is ferromagnetic. Also, partial polarization of Eu3+ is visible. Moreover, oxygen is detected in the nitrided sample. These results suggest that oxygen was dissolved into the lattice.
A porous boron nitride (BN) host facilitates energy transfer from TTA ligands to the Eu3+ ions. This interaction enhances the red emission of Eu(TTA)3@BN. In addition, the thermal stability of the BN microfibers is improved. Moreover, the transport properties of the films can be used to explore the nature of the exchange mechanism.
Eu(TTA)3@BN samples exhibit a broad blue and red excitation spectrum. The intensity of the red emission peaks increases as the Eu content increases. However, the blue band intensity is less with increasing Eu content. Similarly, the magnitude of the resistivity is relatively small.
Among the RENs, EuN has unique spectroscopic and magnetic properties. As a result, it is one of the most promising candidates for hybrid luminescent materials. Nevertheless, few studies have been performed on the fundamental spectroscopic characteristics of Eu3+ in p-n diode structures.