V. A. Krut’ko, M. G. Komova, D. V. Pominova, A. V. Popov, A. B. Yaroslavtsev, G. E. Nikiforova, A. V. Gavrikov
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引用次数: 0
摘要
摘要-以 LaBWO6 为载体，我们制备了一系列掺铒的硼钨酸镧（LBTs）--La1 - xErxBWO6 和掺镱/铒的 La1 - x - yYbxEryBWO6，它们在单斜晶系（Sp.）这些材料是通过陶瓷路线和溶胶-凝胶（Pechini）工艺合成的，然后进行了退火处理。我们对合成的枸杞多糖的光谱特性进行了研究，结果表明，在近红外区域的激发下，枸杞多糖在绿色光谱区域发光。La0.97Yb0.02Er0.01BWO6 成分的发光效率最高，达到 Ben = 0.55%。事实证明，溶胶-凝胶合成（Pechini 工艺）是制备此类荧光粉的最佳方法。由于兼具高上转换效率和热稳定性，合成的上转换荧光粉可用于设计近红外光谱区的白光光源。
Synthesis and Spectral Properties of La1 – xBWO6:Erx and La1 – x – yBWO6:Ybx,Ery Upconversion Phosphors
Using LaBWO6 as a host, we have prepared a series of erbium-doped lanthanum borotungstates (LBTs), La1 – xErxBWO6, and Yb/Er-codoped La1 –x–yYbxEryBWO6, which crystallize in monoclinic crystal system (sp. gr. P21). The materials have been synthesized by ceramic route and a sol–gel (Pechini) process, followed by annealing. We have studied the spectral properties of the synthesized LBTs exhibiting the luminescence in the green spectral region upon the excitation in the near-infrared region. The highest efficiency, with Ben = 0.55%, has been obtained for La0.97Yb0.02Er0.01BWO6 composition. Sol–gel synthesis (Pechini process) has been shown to be the optimal approach for the preparation of such phosphors. Due to a combination of high upconversion efficiency and thermal stability, the synthesized upconversion phosphors can be used for the design of white light sources pumped in the near-IR spectral region.
期刊介绍：
Inorganic Materials is a journal that publishes reviews and original articles devoted to chemistry, physics, and applications of various inorganic materials including high-purity substances and materials. The journal discusses phase equilibria, including P–T–X diagrams, and the fundamentals of inorganic materials science, which determines preparatory conditions for compounds of various compositions with specified deviations from stoichiometry. Inorganic Materials is a multidisciplinary journal covering all classes of inorganic materials. The journal welcomes manuscripts from all countries in the English or Russian language.
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