Abstract Rare earth activated fluoride phosphors have attention in recent years in the field of solid state lighting. In the present study, RE (RE = Ce3+,Eu2+) doped/co-doped BaSiF6 phosphor has been synthesized by low temperature solution combustion method at 500 ± 20 °C using urea as a fuel. Photoluminescence (PL) properties of this sample were investigated by RF-5301 PC Spectrofluorophotometer. The structural, vibrational features and morphology of all the samples were analyzed by X-ray Diffraction (XRD), and Fourier Transform-Infrared Spectroscopy (FT- IR) which showed that the samples were crystallized in a well known structure. Photoluminescence characterization of Eu2+ doped phosphor shows a blue emission at λmax ~460 nm under the excitation of 287 nm. The photoluminescence properties of the as‐prepared phosphors were investigated and the Ce3+ ions in these hosts were found to give little broadband emission in the UV range at 344 nm on exciting it at 300 nm. A broad PL excitation peak is obtained on co-doping Ce3+ with Eu2+ in the range of 300–425 nm highest intensity at 362 nm gives broad blue emission at 440 nm. This luminescent powder are expected to find out potential applications in the blue emitting phosphor converted white light emitting diodes and optical display systems.

中文翻译：

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通过能量转移机制增强 Ce3+、Eu2+ 激活的 BaSiF6 下转换磷光体中的蓝色发射：一种光致变色磷光体

摘要 稀土活化氟化物荧光粉近年来在固态照明领域受到关注。在本研究中，使用尿素作为燃料，在 500 ± 20 °C 下通过低温溶液燃烧法合成了稀土 (RE = Ce3+,Eu2+) 掺杂/共掺杂 BaSiF6 荧光粉。该样品的光致发光 (PL) 特性通过 RF-5301 PC 荧光分光光度计进行研究。通过 X 射线衍射 (XRD) 和傅立叶变换红外光谱 (FT-IR) 分析所有样品的结构、振动特征和形态，表明样品以众所周知的结构结晶。Eu2+ 掺杂磷光体的光致发光表征显示在 λmax ~460 nm 处在 287 nm 激发下发出蓝色光。研究了所制备的磷光体的光致发光特性，发现这些主体中的 Ce3+ 离子在 300 nm 激发时在 344 nm 的紫外范围内几乎没有宽带发射。在 300–425 nm 的范围内，在 362 nm 的最高强度范围内，在 Ce3+ 与 Eu2+ 共掺杂时获得了宽的 PL 激发峰，在 440 nm 处产生了宽的蓝色发射。这种发光粉末有望在蓝色荧光粉转换的白色发光二极管和光学显示系统中找到潜在的应用。