Ce and Eu activated Na2Zn5(PO4)4, a new promising novel phosphor

Bulletin of materials science

K N Shinde¹  S J Dhoble¹  Animesh Kumar² 

[1] Department of Physics, RTM Nagpur University, Nagpur 440 033, India$$Department of Physics, RTM Nagpur University, Nagpur 440 033, IndiaDepartment of Physics, RTM Nagpur University, Nagpur 440 033, India$$;National Environmental Engineering Research Institute, Nagpur 440 020, India$$National Environmental Engineering Research Institute, Nagpur 440 020, IndiaNational Environmental Engineering Research Institute, Nagpur 440 020, India$$

关键词: Photoluminescence;    phosphor;    solid state lighting;    synthesis;    phosphate.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

A new efficient phosphor, Eu²⁺/Eu³⁺ and Ce³⁺ activated Na₂Zn₅(PO₄)₄ has been synthesized by solid-state reaction technique at high temperature. X-ray powder diffraction analysis confirmed the formation of Na₂Zn₅(PO₄)₄ host lattice. Scanning electron microscopy indicated that the microstructure of the phosphor consisted of irregular fine grains with a size of about 0.5â€�??2 𝜇m. Photoluminescence excitation spectrum measurements of Ce³⁺ activated Na₂Zn₅(PO₄)₄ show that the phosphor can be efficiently excited by UV-Vis light from 280 to 310 nm to realize emission in the visible (blue) range due to the 5ð‘�?�â€�?4ð‘�?? transition of Ce³⁺ ions which is applicable for scintillation purpose, whereas Eu²⁺/Eu³⁺ activated Na₂Zn₅(PO₄)₄ phosphor emits blue, green and red emission spectrum shows at 487 nm, 546 nm with a dominant peak at 611 nm respectively, due to Eu²⁺/Eu³⁺ ions which is promising candidate for solid state lighting. Therefore, newly synthesised, by low cost and easy technique prepared, novel phosphors may be useful as RGB phosphor for solid state lighting application.

【 授权许可】

Unknown