Dy^3+掺杂浓度对Ca3Si3O9:Dy^3+发光性能有明显的影响,随着Dy^3+浓度的增大, Ca3Si3O9:Dy^3+的发光强度和黄,蓝光发射强度比(Y/B)均呈现先增大后减小的规律,最大发光强度值对应的Dy^3+浓度为1 mol%.电荷补偿剂Li+能提高Ca3Si3O9:Dy^3+的发光强度,特别当Li+浓度为2-4 mol%时,荧光粉的蓝光发射...
Gadolinium oxide solubility in molten silicate: dissolution mechanism and stability of Ca 2 Gd 8 (SiO 4 ) 6 O 2 and Ca 3 Gd 2 (Si 3 O 9 ) 2 silicate phasesGadolinium oxide solubility in molten silicate: dissolution mechanism and stability of Ca 2 Gd 8 (SiO 4 ) 6 O 2 and Ca 3...
13.C、Si及其化合物在工业上用途广泛. (1)硅元索在周期表中的位置为第三周期第IVA族,硅原子中能量最高的电子处在M电子层上(填电子层符号如K层),写出单质硅的一种用途:半导体材料/太阳能电池; SiH4的空间结构是正四面体形. (2)焦炭、石英砂与磷酸钙混合加热到1500℃生成白磷:2Ca3(PO4)3+6Si02=6CaSO4+...
发光Tb3+ Ca3Y2(Si3O9)2采用高温固相法制备了Ca3Y2(Si3O9)2:Tb^3+绿色荧光粉,研究了材料的光学性能。X射线衍射(XRD)结果显示,掺杂少量的Tb^3+,并未影响Ca3Y2(Si3O9)2材料的晶相结构。Ca3Y2(Si3O9)2:Tb^3+荧光粉的激发光谱由较强的4 f75 d1宽带吸收(200-300nm)和较弱的4f-4f电子跃迁吸收...
发光Tb3+ Ca3Y2(Si3O9)2采用高温固相法制备了Ca3Y2(Si3O9)2:Tb^3+绿色荧光粉,研究了材料的光学性能。X射线衍射(XRD)结果显示,掺杂少量的Tb^3+,并未影响Ca3Y2(Si3O9)2材料的晶相结构。Ca3Y2(Si3O9)2:Tb^3+荧光粉的激发光谱由较强的4 f75 d1宽带吸收(200-300nm)和较弱的4f-4f电子跃迁吸收...
橙红色荧光粉发光性能采用高温固相法合成了Ca3Y2-2x(Si3O9)2:2xEu3+系列荧光粉,并表征了材料的发光特性.X射线衍射谱表明,得到的样品为纯相的Ca3Y2(Si3O9)2晶体.样品的激发光谱主要来源于较强的O2--Eu3+电荷迁移带和相对较弱的Eu3+的f-f跃迁吸收.样品在紫外光,近紫外光激发下发射橙红光.以225 nm...
采用高温固相法合成了Ca3Y2-2x(Si3O9)2:2xEu^3+系列荧光粉,并表征了材料的发光特性。X射线衍射谱表明,得到的样品为纯相的Ca3Y2(Si3O9)2晶体。样品的激发光谱主要来源于较强的O^2-Eu^3+电荷迁移带和相对较弱的Eu^3+的f-f跃迁吸收。样品在紫外光、近紫外光激发下发射橙红光。以225nm作为激发源时,...
Erratum: On the luminescence and energy transfer of white emitting Ca3Y2(Si3O9)2:Ce3+,Mn2+ phosphor (Journal of Luminescence (2014) 155 (398-404))Mller, MatthiasJstel, Thomas
On the luminescence and energy transfer of white emitting Ca3Y2(Si3O9)2:Ce3+,Mn2+ phosphorCe3+Mn2+Energy transferPhotoluminescenceDecay measurementsQuantum efficiencyCe3+ emission from two distinct sites and Mn2+ emission from three distinct sites.White luminescence under near UV excitation.Emission...
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