名称 : White-light emitting single-phase phosphor La3Si6N11:Dy3+,Tb3+: Color tunable emission, thermal stability and energy transfer process
发表日期 : 2019-01-04
摘要 : A novel white-light emitting single-phase phosphor La3Si6N11:Dy3þ, exhibiting two emission peaks centering at 475 and 575 nm, was prepared via conventional solid-state reactions. The structure and morphology of La3Si6N11:Dy3þ/Tb3þ were investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The emission colors can be tuned from white to yellow-green through increasing the Tb3þ concentration in La3Si6N11:Dy3þ,Tb3þ. The mechanism of energy transfer (ET) from Dy3þ to Tb3þ is confirmed according to the excitation, emission spectra and decay lifetimes curve. The temperaturedependent luminescence measurements of La2.83Si6N11:0.1Dy3þ,0.07Tb3þ were also performed, and a good thermal stability is shown, suggesting superior properties for the application as white lightemitting diodes (w-LEDs) phosphor.
网址 : https://doi.org/10.1016/j.jre.2018.09.007
领域 : 荧光材料领域
出版公司 : 有科出版
出版国家 : CN
重点项目名称 : 第三代半导体核心配套材料-第三代半导体高能量密度光源用新型荧光材料及制备技术数据集
