Preparation and characterization of boron oxide-based red-emitting phosphors using Eu, Al and Ca additives

New red-emitting phosphors have been produced and studied by investigating the effects of various additives such as europium (Eu), aluminum (Al), and calcium (Ca) on the photoluminescence performance of boron oxide-based phosphors. When both Eu and Ca ions were added, Ca3B2O6:Eu phosphors could be synthesized via a straightforward process using a liquid precursor. The photoluminescent spectra of Ca3B2O6:Eu phosphors exhibited a red emission at 611 nm under 254 nm excitation, and the internal quantum efficiency reached 41.5% when the concentration of Eu ion was fixed at an optimal condition of 0.13 M.

New phosphors have been developed by investigating the effect of various additives, such as europium, aluminum, and calcium on the photoluminescence performance of boron oxide-based phosphors. When both europium and calcium were used as additives, Ca3B2O6:Eu phosphors could be synthesized via a straightforward process using a liquid precursor in a short time at a relatively low temperature.Figure optionsDownload as PowerPoint slideHighlights
► We developed new red emitting boron oxide-based phosphors Ca3B2O6:Eu.
► Ca3B2O6:Eu phosphor could be synthesized via a straightforward process.
► Ca3B2O6:Eu phosphor could be produced at less than 900 °C in 30 min.
► The photoluminescence of Ca3B2O6:Eu showed a red emission at 611 nm.
► Effects of precursor condition on luminescence properties were investigated.