Blue‐White‐Green Tunable Luminescence of Ce3+, Tb3+ Co‐Doped Sodium Silicate Glasses for White LEDs
Blue‐White‐Green Tunable Luminescence of Ce3+, Tb3+ Co‐Doped Sodium Silicate Glasses for White LEDs
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DOI：
10.1111/j.1551-2916.2011.04929.x
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发表时间：
2012
影响因子：
3.9
通讯作者：
Rongfei Wei;Hao Zhang;Fang Li;Hai Guo
中科院分区：
文献类型：
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作者：
Rongfei Wei;Hao Zhang;Fang Li;Hai Guo
采用熔体淬冷法制备了Ce3+、Tb3+共掺的高透明水玻璃。通过激发光谱、发射光谱、衰减曲线和能级图，系统地研究了Ce3+、Tb3+单掺和共掺玻璃的发光性质以及Ce3+到Tb3+的能量传递过程。调节Tb3+的含量可以产生从蓝色到白色再到黄绿色的各种色调。实验结果表明，Ce3+、Tb3+共掺的硅酸钠玻璃可以作为近紫外光LED芯片的转换荧光粉，产生W-LED。
Highly transparent Ce3+, Tb3+ co-doped sodium silicate glasses were prepared by melt-quenching technique. The luminescent properties of Ce3+, Tb3+ single-doped and co-doped glasses, energy transfer process from Ce3+ to Tb3+ were systemically investigated through excitation spectra, emission spectra, decay curves, and energy level diagram. Tuning the content of Tb3+ can generate the varied hues from blue to white and eventually to yellowish green. Our results suggest that Ce3+, Tb3+ co-doped sodium silicate glasses could be used as converting phosphors for Near-ultraviolet LED chips to generate W-LEDs.