Synthesis of pure Zn2SiO4:Mn green phosphors by simple PVA–metal complex route
Synthesis of pure Zn2SiO4:Mn green phosphors by simple PVA–metal complex route
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通过简单的PVA-金属络合物路线合成纯Zn2SiO4:Mn绿色荧光粉
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
J. Lacombe
中科院分区：
文献类型：
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作者：
A. Manavbasi;J. Lacombe
通过简单且成本有效的聚乙烯醇（PVA）-络合物路线合成了绿色发光Zn 2 − xMnxSiO 4（硅锌矿）颗粒。对煅烧产物的微观结构研究表明，颗粒是纯净的，单相，纳米晶，团聚形态。在空气中于850 - 1，175 °C煅烧2小时，获得纯相硅锌矿结构。粒度分析表明，平均粒径为10.1 μm。这些4和12摩尔%的Mn掺杂的Zn 2SiO 4粉末的光致发光性能进行了测量，通过荧光光谱。在1,150 °C下制备的具有4摩尔% Mn掺杂的颗粒，具有13.4 ms的发射衰减时间I。/e，显示出最高的相对峰值发射强度。在该掺杂水平下的发射强度被测量为掺杂有11.2mol%Mn的代表性商业产品的10.110%，并且表现出7.1ms的衰减时间。研究了煅烧温度对所合成的绿色粉体的光致发光和结晶性能的影响。
Green light emitting Zn2−xMnxSiO4 (willemite) particles were synthesized by a simple and cost-effective poly(vinyl alcohol) (PVA)-complex route. Microstructural studies on the calcined products show that particles are pure, single phase, nano-crystalline, and agglomerated morphology. A pure-phase willemite structure was obtained with calcination between 850 and 1,175 °C for 2 h in air. Particle size analysis indicates that the average particle size is ∼1 μm. The photoluminescence properties of these 4 and 12 mol% Mn-doped Zn2SiO4 powders were measured by fluorescence spectroscopy. Particles with 4 mol% Mn doping prepared at 1,150 °C, with an emission decay time, I0/e, of 13.4 ms showed the highest relative peak emission intensities. The emission intensity at this doping level was measured to be ∼110% of a representative commercial product’s, doped with 11.2 mol% Mn, and exhibiting a decay time of 7.1 ms. The effect of calcination temperature on the photoluminescence and crystallinity properties of synthesized green powders was also investigated.