کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1605808 1516217 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Extensive studies of host lattices and activators in lanthanide phosphors based on efficient synthesis
ترجمه فارسی عنوان
مطالعات گسترده ای از شبکه های میزبان و فعال کننده های فسفر لانتانیدی بر اساس سنتز کارآمد
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
چکیده انگلیسی
Uniform and dispersive NaLa(MoO4)2-x(WO4)x (abbreviated as NLMW): Eu3+/Tb3+(5 mol%) microspheres were successfully synthesized at low temperature (393 K). The incorporation of Bi3+ or Mn2+ into CaMoO4: Eu3+ with tetragonal crystalline phase has also been studied. The structure, morphology, and luminescent properties of these powder samples were examined by means of X-ray diffraction (abbreviated as XRD), scanning electron microscopy (abbreviated as SEM), and fluorescent spectrophotometry, respectively. SEM images substantiated that these phosphors have uniform sphere-shaped morphologies. The samples exhibited the characteristic emission of Eu3+(5D0 → 7FJ)/Tb3+(5D4 → 7FJ) under ultraviolet excitation. Effects of the ratio of MoO4/WO4 on the luminescence behavior were investigated in detail. The MoO4/WO4 ratio was optimized as 1/1. The international commission on illumination (abbreviated CIE for its French name) chromaticity coordinates of NLMW: Eu3+ and NLMW: Tb3+ indicate the emissions were located in the red and green region, which will be beneficial for the potential device fabrication. Encapsulation of Bi3+ and Mn2+ both can effectively sensitize europium (III) ions, generating stronger red emissions (5D0 → 7FJ).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 676, 15 August 2016, Pages 292-298
نویسندگان
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