Variation in Eu3+ luminescence properties of GdF3:Eu3+ nanophosphors depending on matrix GdF3 polytype
作者： Xiaoting Zhang , Tomokatsu Hayakawa , Masayuki Nogami , Yukari Ishikawa
DOI: 10.1016/J.JALLCOM.2010.10.143
关键词:
摘要: Hexagonal and orthorhombic GdF3:Eu3+ nanophosphors separately synthesized at room temperature were well characterized by X-ray diffraction (XRD) analysis photoluminescence excitation emission spectral measurements. intrinsically exhibited stronger Eu3+ luminescence intensity under ultraviolet excitation. The Rietveld fitting of well-defined XRD data elucidated that the interatomic distances between Gd3+ ions in hexagonal structure shorter than those most Eu occupy Gd sites. was conclusively explained much more efficient energy transfer from to structure, as determined on basis distance Eu.
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