Synthesis and luminescent properties of europium-activated Ca2SnO4 phosphors by sol-gel method

In this paper, the Ca2SnO4:Eu3+ phosphor was prepared by low-temperature sol-gel method The influence of calcined temperature and time on structure of Ca2SnO4:Eu3+ was investigated by using X-ray powder diffraction (XRD) The experimental results show that the dried gel was crystallized to the pure orthorhombic phase after calcination at 900 degrees C in air for 6 h These phosphors have displayed bright red color under a UV source. The richness of the red color has been verified by determining their color coordination from the CIE standard charts, and this red emission has been assigned to D-5(0) -> F-7(2) electric dipole transition at 616 and 620 nm The excellent luminescence properties make it possible as a good candidate for plasma display panel (PDP) application. (C) 2009 Elsevier B.V All rights reserved