Optically Functional Zeolites: Evaluation of UV and VUV Stimulated Photoluminescence Properties of Ce3+‐ and Tb3+‐doped Zeolite X
Optically Functional Zeolites: Evaluation of UV and VUV Stimulated Photoluminescence Properties of Ce3+‐ and Tb3+‐doped Zeolite X
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DOI：
10.1002/1616-3028(200104)11:2
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发表时间：
2001-04
影响因子：
19
通讯作者：
T. Jüstel;D. Wiechert;C. Lau;D. Sendor;U. Kynast
中科院分区：
文献类型：
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作者：
T. Jüstel;D. Wiechert;C. Lau;D. Sendor;U. Kynast
阐述了Tb3+/Ce3+掺杂分子筛的光学性质，重点研究了紫外光(UV)和真空紫外光(VUV)激发和发光。Ce~(3+)敏化的Tb~(3+)在330 nm激发下的量子产率为85%。由于抑制UV组分所需的低Ce3+浓度或低Ce3+/Tb3+比，在254 nm处的低吸收率限制了它们作为汞基放电荧光粉的适用性，例如在传统荧光灯中。在172 nm的近带边激发下，分子筛Ce3+(5d1)Tb3+(4f75d1)的能量转移通道使量子产率达到50%，这可能被用来实现XE2准分子发射的下转换。
The optical properties of Tb3+/Ce3+ doped zeolites are elucidated with emphasis on ultraviolet (UV) and vacuum ultraviolet (VUV) excitation and luminescence. Ce3+ sensitized Tb3+ emission with quantum yields of 85 % may be obtained at 330 nm excitation. Low absorptivity at 254 nm due to low Ce3+ concentrations or low Ce3+/Tb3+ ratios, which are required for the suppression of UV components, restricts their applicability as phosphors for Hg-based discharges, e.g., in conventional fluorescent lamps. Near band edge excitation at 172 nm revealed an immediate quantum yield of 50 % enabled by a zeolite Ce3+ (5d1) Tb3+ (4f75d1) energy transfer channel, which may be exploited for the down-conversion of the Xe2 excimer emission.