Back Cover: Phys. Status Solidi A 206/5


The back cover picture of this issue refers to the article entitled ‘Preparation and luminescent properties of Eu2+-activated glass ceramic phosphor precipitated with β-Ca2SiO4 and Ca3Si2O7’ by T. Nakanishi and S. Tanabe (pp. 919–922). The paper is a contribution from the International Conference on Optical, Optoelectronic and Photonic Materials and Applications (ICOOPMA) held in Edmonton, Canada in July 2008. The two left-most pictures show the cathodoluminescence mapping images of the as-made glass ceramic (GC) and a GC sample heat-treated at 1050 °C, in which the secondary phase of red phosphor was precipitated around the primary crystal phase emitting green luminescence by post ceramization. The three sample pictures show the color variation of the photoluminescence from the GC phosphors of the same composition ceramed at different temperatures. The chromaticity diagram on the right hand side shows the change in the color coordinates through the ceramization (© 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)