Abstract
Energy-dispersive X-ray analysis based on electron channeling effects in transmission electron microscopy (TEM) was performed on Ca 2SnO 4 phosphor materials doped with Eu 3+/Y 3+ at various concentrations, which showed red photoluminescence associated with the Eu 3+ 5D 0– 7F 2 electric dipole transition. The method provided direct information on which host element site impurity elements occupy. The local atomic configurations and chemical bonding states associated with dopant impurities with different ionic radii were also examined by TEM–electron energy-loss spectroscopy (TEM–EELS).
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