Luminescence Performance of Yellow Phosphor Sr xBa1−x TiO3: Eu3+, Gd3+ for Blue Chip

Abstract EN

The Sr xBa1−x TiO3: Eu3+, Gd3+ phosphors are synthesized by high temperature solid-phase method.

Multiple techniques including X-ray diffraction (XRD), and scanning electron microscopy (SEM) are used to examine the surface morphology and structural properties of Sr xBa1−x TiO3: Eu3+, Gd3+ phosphors.

The optical properties are presented and discussed in terms of photoluminescence (PL) and photoluminescence excitation (PLE) spectra.

The as-obtained Sr xBa1−x TiO3: Eu3+, Gd3+ phosphors show higher PL emission intensity (at 591, 611 nm).

The peaks at 591 and 611 nm are attributed to Eu3+ 5D0-7F1, 5D0-7F2.

Gd3+ has a strong sensitization on Eu3+.

A certain amount of Sr2+ and Ba2+ is contributed to the intensity of light emission.

After being irradiated with blue light, the phosphor samples emit yellow light.

This suggests its potential applications in many fields.