Design, synthesis and luminescence properties of Ba₂YB₂O₆Cl‐ and Ba₂YB₂O₆F‐based phosphors

Abstract

Using a high-temperature solid-state reaction, the chlorine in Ba2 YB2 O6 Cl is gradually replaced by F, and a new compound with the nominal chemical formula Ba2 YB2 O6 F and two phosphors doped with Ce(3+) and Eu(3+) , respectively, are obtained. X-Ray diffraction and photoluminescence spectroscopy are used to characterize the as-synthesized samples. The as-synthesized Ba2 YB2 O6 Cl exhibits bright blue emission in the spectral range ~ 330-410 nm with a maximum around 363 nm under X-ray or UV excitation. Ba2 YB2 O6 F:0.01Ce(3+) exhibits blue emission in the range ~ 340-570 nm with a maximum around 383 nm. Ba2 YB2 O6 F:0.01Eu(3+) exhibits a predominantly (5) D0 -(7) F2 emission (~610 nm) and the relative intensities of the (5) D0 -(7) F0,1,2 emissions are tunable under different wavelength UV excitation. The luminescence behaviors of the two phosphors are explained simply in terms of the host composition and site occupancy probability of Ce(3+) and Eu(3+) , respectively. The results indicate that these phosphors have potential application as a blue phosphor or as a red phosphor.

Luminescent inorganic mixed borate phosphors materials for lighting

“…Other than haloborates with the formula M 2 B 5 O 9 X, some complex haloborates involving lanthanides have been described in recent years. [182,183] 4.4 | Phosphate borate 4.4.1 | BaBPO 5…”