Europium belongs to the lanthanide series of the periodic table. The most important property of this element is its luminescence, which can be defined as emission of light by a material as a consequence of energy absorption. Such property leads to the main use of this element; that is, its application as phosphor, which emits colored light through electroluminescent processes, with potential utilization in computer and TV displays. Many scientists employ the luminescence spectroscopy of the europium ion to elucidate the structure of natural and synthetic compounds. This new book reviews research on the photoluminescence of the europium ion in different materials, prepared by hydrolytic and non-hydrolytic sol-gel methodologies and intercalation in kaolinite.
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