LiBa₁₂(BO₃)₇F₄ (LBBF) crystals doped with Eu³⁺, Tb³⁺, Ce³⁺: structure and luminescence properties

Abstract

The luminescent properties of single crystals and polycrystalline samples of LiBa12(BO3)7F4 (LBBF) doped and co-doped with Eu3+, Tb3+, and Ce3+ have been studied in order to disclose their potential for...

A Photoluminescence Study of Eu3+, Tb3+, Ce3+ Emission in Doped Crystals of Strontium-Barium Fluoride Borate Solid Solution Ba4−xSr3+x(BO3)4−yF2+3y (BSBF)

“…2) 300 K; BSBF: Eu 3+ at 300 nm excitation at (3) 77 K and (4) 300 K, at 370 nm excitation at (5) 77 K and (6) 300 K, and at 395 nm excitation at (7) 77 K and (8) 300 K; BSBF: Eu 3+ , Tb 3+ , Ce 3+ at 300 nm excitation at (9) 77 K and (10) 300 K, at 370 nm excitation at (11) 77 K and 300 K (12), and at 395 nm excitation at (13) 77 K and (14) 300 K. Corresponding CIE chromaticity coordinates and correlated color temperature are given in Table 3. Unlike the LBBF: Eu 3+ , Tb 3+ , Ce 3+ [10] and LBBF: Eu 3+ , Tb 3+ [40] crystals, which exhibit white emission close to daylight at 370 nm excitation, the BSBF: Eu 3+ , Tb 3+ , Ce 3+ emission at 370 nm excitation is yellow shifted (points 11, 12, Figure 8). This might be due to the different ability of europium, terbium, and cerium to enter the BSBF structure (as we mentioned above, the emission of cerium ions in BSBF: Eu 3+ , Tb 3+ , Ce 3+ is practically absent).…”

“…Unlike the LBBF: Eu 3+ , Tb 3+ , Ce 3+ [10] and LBBF: Eu 3+ , Tb 3+ [40] crystals, which exhibit white emission close to daylight at 370 nm excitation, the BSBF: Eu 3+ , Tb 3+ , Ce 3+ emission at 370 nm excitation is yellow shifted (points 11, 12, Figure 8). This might be due to the different ability of europium, terbium, and cerium to enter the BSBF structure (as we mentioned above, the emission of cerium ions in BSBF: Eu 3+ , Tb 3+ , Ce 3+ is practically absent).…”