Luminescent mechanism of Y2SiO5:Ce phosphor powder

Coetsee E; Terblans JJ; Ntwaeaborwa OM; Swart HC

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Luminescent mechanism of Y2SiO5:Ce phosphor powder

机译：Y2SiO5：Ce荧光粉的发光机理

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A luminescent mechanism was constructed for the broad band emission spectra of the X-1 phase of the Y2SiO5:Ce phosphor powder. Four Gaussian peaks fit to the cathodoluminescent (CL) and photoluminescent (PL) spectra were attributed to the two different sites (A1 and A2) of the Ce3+ ion in the host matrix and the difference in orientation of the neighbour ions in the complex crystal structure. Each Ce3+ site gives rise to transitions from the 5d to the two (therefore two peaks) 4f energy levels (F-2(5/2) and F-2(7/2) due to crystal field splitting). Energy transfer from other defect levels in the matrix was also observed.

机译：为Y2SiO5：Ce荧光粉的X-1相的宽带发射光谱建立了发光机理。符合阴极发光（CL）和光致发光（PL）光谱的四个高斯峰归因于主体基质中Ce3 +离子的两个不同位点（A1和A2）以及复杂晶体结构中相邻离子的取向差异。每个Ce3 +位点都从5d跃迁到两个（因此是两个峰值）4f能级（由于晶体场分裂而导致的F-2（5/2）和F-2（7/2））。还观察到了基质中其他缺陷能级的能量转移。

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《Physica, B. Condensed Matter》 |2009年第22期|共5页
作者
Coetsee E; Terblans JJ; Ntwaeaborwa OM; Swart HC;
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Y2SiO5:Ce; CL; PL and Gaussian peak fitting;

机译：Y2SiO5：Ce;CL;PL和高斯峰拟合;

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Luminescent mechanism of Y2SiO5:Ce phosphor powder

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