Microwave-assisted synthesis and thermally stable red fluorescence of Ba3(ZnB5O10)PO4:Eu3+solid solution

Red-emitting materials play a significant role in phosphor-converted white light-emitting diodes (WLEDs), since it can effectively improve the chromatic properties of the solid-state lighting source. In this work, we employ a microwave-assisted solid-state reaction to prepare a red-emitting Ba3(ZnB5O10)PO4:Eu3+ (BZBP:Eu3+) phosphor. Eu3+ activators are solidly dissolved into the BZBP host via occupying the Ba2+ positions. Excited by 395 nm, the title phosphor yields red emission with high color purity, which is dominated by the electric dipole transition of Eu3+. Base on the investigation of photoluminescence in response to the Eu3+ content, the content quenching mechanism is understood. Besides, the study on the luminescence temperature quenching reveals the good thermal stability and resistance to chromaticity shifting. The results indicate that the studied phosphor would be an alternative red-emitting material for WLEDs.

Automated summary

In this study, a red-emitting Ba3(ZnB5O10)PO4:Eu3+ phosphor was prepared using a microwave-assisted solid-state reaction. The Eu3+ activators were solidly dissolved into the BZBP host by occupying the Ba2+ positions. Upon excitation at 395 nm, the phosphor exhibited red emission with high color purity, mainly attributed to the electric dipole transition of Eu3+. The investigation of photoluminescence in response to the Eu3+ content provided insight into the content quenching mechanism. Additionally, the study on luminescence temperature quenching demonstrated the good thermal stability and resistance to chromaticity shifting. The results suggest that the studied phosphor shows promise as an alternative red-emitting material for WLEDs.