科研之友
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摘要
The present investigation aims at the synthesis of KSr1-x-yPO4 : Tbx3+Euy2+, phosphors using a combinatorial chemistry method. We have developed square-type arrays consisting of 121 compositions to investigate the optimum composition and luminescence properties of KSrPO4 host matrix under 365 nm ultraviolet (UV) light. The optimized compositions of phosphors were found to be KSr0.93PO4 : Tb-0.07(3+) (green) and KSr0.995PO4 : Eu-0.005(2+) (blue). These phosphors showed good thermal luminescence stability better than commercial available YAG: Ce at temperature above 200 degrees C. The result indicates that the KSr1-x-yPO4 : Tbx3+Euy2+, can be potentially useful as a UV radiation-converting phosphor for light-emitting diodes.
- 出版日期2011-3
