International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki, Japan.
Nanoscale. 2011 Feb;3(2):598-602. doi: 10.1039/c0nr00700e. Epub 2010 Nov 16.
Luminescence properties of individual BN-coated CaS:Eu nanowires have been studied by high-spatial-resolution cathodoluminescence (CL) spectroscopy. A broad red light-emitting band from an individual nanowire has been observed. Detailed local CL studies on the nanowires reveal spatial variations of luminescence from the structure surfaces toward their cores. Such variations are attributed to the different Eu2+ ions surroundings within the surface and core nanowire regions. The attractive luminescence properties are meaningful for fundamental studies of nanoscaled luminescent materials and may be of interest for novel optoelectronic applications.
通过高空间分辨率的阴极发光（CL）光谱研究了单个 BN 涂层 CaS:Eu 纳米线的发光性能。观察到来自单个纳米线的宽红光发射带。对纳米线的详细局部 CL 研究表明，发光从结构表面向其核心存在空间变化。这种变化归因于表面和核心纳米线区域内不同的 Eu2+离子环境。这种吸引人的发光性能对于纳米发光材料的基础研究具有重要意义，并且可能对新型光电应用感兴趣。
