The preparation and photoluminescence properties of Y2-xEux(MoO4)3 nanophosphors and a transparent Y1.4Eu0.6(MoO4)3 suspension
Abstract
A new method was examined to synthesize Y2-xEux(MoO4)3 nanophosphors by reacting Y-oleate (with Eu-oleate) and tetraoctylammonium (TOA)-MoO4 complexes via a solvothermal reaction. The Y-oleate (with Eu-oleate) and TOA-MoO4 complexes were prepared using a simple phase-transfer method. The brightest emission was obtained from the Y1.4Eu0.6(MoO4)3 nanophosphor prepared at 100 °C. The strongest emission peak was observed at 617 nm and was attributed to the 5D0 → 7F2 transition of the Eu3+ activator ion in the Y2(MoO4)3 host. Because sodium oleate was used as a surfactant, the Y1.4Eu0.6(MoO4)3 nanophosphor was hydrophobic. A stable, scattering-free suspension of the Y1.4Eu0.6(MoO4)3 nanophosphor in toluene was prepared and found to be suitable for use in the fabrication of transparent displays.
- Publication:
-
Optical Materials
- Pub Date:
- September 2020
- DOI:
- 10.1016/j.optmat.2020.110131
- Bibcode:
- 2020OptMa.10710131L
- Keywords:
-
- Y<SUB>2-x</SUB>Eu<SUB>x</SUB>(MoO<SUB>4</SUB>)<SUB>3</SUB>;
- Red-emitting material;
- Nanophosphor;
- Scattering-free;
- Transparent suspension