Photoluminescence tuning in Ba3ScB3O9:Eu2+ phosphor by crystal-site engineering

Neighboring-cation substitution tuning of photoluminescence by remote-controlled activator in phosphor lattice.

Highly efficient red phosphors with superior intrinsic properties that are excited by ultraviolet or blue light-emitting diodes are important white light sources for our daily life. Nitride-based phosphors, such as Sr2Si5N8:Eu(2+) and CaAlSiN3:Eu(2+), are commonly more red-shifted in photoluminescence and have better thermal/chemical stability than oxides. Cation substitutions are usually perfo...

Self-assembled SiO2 photonic crystal infiltrated by Ormosil:Eu(DBM)(3)phen phosphor and its enhanced photoluminescence.

Luminescence films were prepared by infiltration of the tris(dibenzoylmethane) mono(1, 10-phenanthroline) europium incorporated ormosil into colloidal SiO(2) photonic crystal templates. Because a stopband of the template was not overlapped with the PL excitation and emission bands, the stopband did not suppress the PL intensity. The PL intensity of the infiltrated film into the template was abo...

Fine tuning of crystal architecture by intermolecular interactions: synthon engineering

Structure and Photoluminescence Properties of Sm3+ Ion-Doped YInGe2O7 Phosphor

A new phosphor, Sm3+ ion-doped YInGe₂O₇, was synthesized using a planetary ball mill solid state reaction. The XRD patterns show that all of the peaks can be attributed to the monoclinic YInGe₂O7 crystal structure when the Sm3+ ion concentration is increased up to 20 mol %. Under an excitation wavelength of 404 nm, the Sm3+ intra-4f transition appears in the emission spectrum including two stro...

Synthesis, Characterization and Photoluminescence of Sr2CeO4: Dy3+, La3+) phosphor

In this work, pure Sr2CeO4 and Sr2CeO4: x=0.01, 0.1, 0.2, 0.5, 1.0mol% Dy3+, 0.5mol% La3+ phosphors were synthesized by solid state reaction method. X-ray diffraction (XRD) patterns confirmed that the samples exhibited an orthorhombic crystal structure. Room temperature photoluminescence (PL) analysis indicated that the excitation peak at around 260 nm, and all the samples showed intense blue e...