Synthesis and optical properties of CaMoO_4:Eu~(3+), Na~+ nanophosphors and a transparent CaMoO_4:Eu~(3+), Na~+ suspension

摘要

CaMoO_4:Eu~(3+), Na~+ nanophosphors were prepared from Ca-oleate (Eu, Na-oleate) and tetraoctylammoni-um (TOA)-MoO_4 complexes by using a solvothermal reaction. The brightest red-emitting nanophosphor was Ca_(0.58)MoO_4:0.21Eu~(3+), 0.21Na~+ prepared at 120 ℃. The surfaces of the CaMoO_4:Eu~(3+), Na~+ nanophosphors were hydrophobic because of the use of oleylamine as surfactant. A stable scattering-free suspension of Ca_(0.58)MoO_4:0.21Eu~(3+), 0.21Na~+ nanophosphor in toluene was also prepared for use in flexible and transparent displays.