Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Abnormal concentration quenching red fluorescent ceramic and preparation method thereof
The invention discloses abnormal concentration quenching red fluorescent ceramic and a preparation method thereof. The molecular formula of the red fluorescent ceramic is Mg < 2-x > Y < 1.93 > Al2Si2O12: 0.07 Ce < 3 + >, xMn < 2 + >, x is the molar percentage of Mn < 2 + > doped Mg site, and x is more than 0 and less than or equal to 0.05; the material is prepared by adopting a high-temperature solid-phase sintering method. The fluorescent ceramic emits bright broadband red light near 618nm under the excitation of blue light with the wavelength near 460nm, and the fluorescent ceramic has an obvious abnormal concentration quenching phenomenon when the Mn < 2 + > doping concentration is more than or equal to 0.01 and less than or equal to 0.05, that is, the entering of Mn < 2 + > ions reduces the quantity of Ce < 2 + > quenching centers, the emission intensity of Ce < 3 + > ions is enhanced, and the fluorescence intensity of the fluorescent ceramic is improved. And the emission intensity of the whole fluorescent ceramic is abnormal. And the preparation method is simple, short in time consumption, green and environment-friendly, and can be applied to industrial production of LED/LD devices.
本发明公开了一种反常浓度猝灭红色荧光陶瓷及其制备方法。该红色荧光陶瓷的分子式为Mg2‑xY1.93Al2Si2O12:0.07Ce3+,xMn2+，其中x为Mn2+掺杂Mg位的摩尔百分数，0＜x≤0.05；采用高温固相烧结法制备得到。本发明的荧光陶瓷在波长为460nm附近的蓝光激发下，在618nm附近发射出明亮的宽带红光，且该荧光陶瓷在Mn2+掺杂浓度0.01≤x≤0.05时出现了明显的反常浓度猝灭的现象，即Mn2+离子的进入减少了Ce2+猝灭中心数量，增强了Ce3+离子的发射强度，使整体的荧光陶瓷的发射强度反常。且制备方法简单，用时短，绿色环保，可应用于LED/LD器件工业化生产。
Abnormal concentration quenching red fluorescent ceramic and preparation method thereof
The invention discloses abnormal concentration quenching red fluorescent ceramic and a preparation method thereof. The molecular formula of the red fluorescent ceramic is Mg < 2-x > Y < 1.93 > Al2Si2O12: 0.07 Ce < 3 + >, xMn < 2 + >, x is the molar percentage of Mn < 2 + > doped Mg site, and x is more than 0 and less than or equal to 0.05; the material is prepared by adopting a high-temperature solid-phase sintering method. The fluorescent ceramic emits bright broadband red light near 618nm under the excitation of blue light with the wavelength near 460nm, and the fluorescent ceramic has an obvious abnormal concentration quenching phenomenon when the Mn < 2 + > doping concentration is more than or equal to 0.01 and less than or equal to 0.05, that is, the entering of Mn < 2 + > ions reduces the quantity of Ce < 2 + > quenching centers, the emission intensity of Ce < 3 + > ions is enhanced, and the fluorescence intensity of the fluorescent ceramic is improved. And the emission intensity of the whole fluorescent ceramic is abnormal. And the preparation method is simple, short in time consumption, green and environment-friendly, and can be applied to industrial production of LED/LD devices.
本发明公开了一种反常浓度猝灭红色荧光陶瓷及其制备方法。该红色荧光陶瓷的分子式为Mg2‑xY1.93Al2Si2O12:0.07Ce3+,xMn2+，其中x为Mn2+掺杂Mg位的摩尔百分数，0＜x≤0.05；采用高温固相烧结法制备得到。本发明的荧光陶瓷在波长为460nm附近的蓝光激发下，在618nm附近发射出明亮的宽带红光，且该荧光陶瓷在Mn2+掺杂浓度0.01≤x≤0.05时出现了明显的反常浓度猝灭的现象，即Mn2+离子的进入减少了Ce2+猝灭中心数量，增强了Ce3+离子的发射强度，使整体的荧光陶瓷的发射强度反常。且制备方法简单，用时短，绿色环保，可应用于LED/LD器件工业化生产。
Abnormal concentration quenching red fluorescent ceramic and preparation method thereof
一种反常浓度猝灭红色荧光陶瓷及其制备方法
ZHANG LE (Autor:in) / LIU XUANCHU (Autor:in) / WANG JINHUA (Autor:in) / MIN CHANG (Autor:in) / LI YANBIN (Autor:in) / KANG JIAN (Autor:in) / ZHOU CHUNMING (Autor:in) / ZHOU TIANYUAN (Autor:in) / CHEN HAO (Autor:in)
05.04.2024
Patent
Elektronische Ressource
Chinesisch
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