A broadband yellow-green emitting mixed orthoborate–pyroborate phosphor, Ba₂Sc₂B₄O₁₁:Ce³⁺, for white light emitting diodes

Abstract

A novel mixed orthoborate–pyroborate phosphor, Ba2Sc2B4O11:Ce3+, with a bright broadband yellow-green emission peak at 540 nm was reported, which can be used for achieving full-spectrum white light illumination instead of a green phosphor.

Ba3Lu(BO3)3:Ce3+,Tb3+/Mn2+: Dual-Functional Material for WLEDs and Optical Pressure Sensing

“…Borate-based compounds are very important materials developed as phosphors due to their simple preparation method at relatively low temperatures, excellent physical and chemical properties, and high quantum efficiency . In our previous work, Ba 3 Sc­(BO 3 ) 3 :Ce 3+ /Tb 3+ phosphor has been synthesized with good luminous performance .…”

A new yellowish‐green‐emitting phosphor: Eu2+‐doped Ba3YAl2O7.5

“…White light emitting diodes (WLEDs), as a new type of solid-state lighting source, have attracted a lot of attention because of their excellent luminescence properties, that is, long service life, high luminescence efficiency, low power consumption, and environmental-friendliness, and are regarded as excellent candidates to replace the current conventional fluorescent and incandescent lamps. [1][2][3][4][5][6][7][8][9][10] At present, white light is generated by a combination of a blue LED chip with a yellow-emitting phosphor from Y 3 Al 5 O 12 :Ce 3+ . [11][12][13] However, the white light formed by this combination produces a low color rendering index (CRI) and a high correlated color temperature (CCT).…”

Ce3+-Doped Li2Ca5Gd(BO3)5 Phosphors with Multiple Luminescent Centers and High Pressure Sensitivity under Near UV Excitation

“…In the literature, there are relatively few reports on Ce 3+ -based phosphors under high pressures, i.e., Y 6 Ba 4 (SiO 4 ) 6 F 2 :Ce 3+ , Ca 2 Gd 8 Si 6 O 26 :Ce 3+ , and Mg 2 Gd 8 Si 6 O 26 :Ce 3+ . − To meet the requirements of visual pressure sensors, the phosphors need to present a high structural stability, PL emission efficiency, pressure susceptibility dσ/d P (σ represents the wavenumber at the maximum of the emission band), and wide pressure range of the linearity . Rare earth borates are good candidates for Ce 3+ -doped phosphors due to the easy doping characteristic, − diverse structural types of metal borates, , and, most importantly, the relatively open polyborate framework rather than oxides with condensed structures, making borate materials susceptible to external high pressures.…”