论文信息 - Red Luminescence in Pr3+‐Doped Calcium Titanates

Red Luminescence in Pr3+‐Doped Calcium Titanates

A strong single red emission band (λ max = 613 nm, FWMH = 450 cm -1 ) was observed at room temperature in Pr 3+ -doped calcium titanates. The evolution of the intensity of this luminescence was analysed in compensated and uncompensated samples (using Na + , Ag + or TI + as charge compensators) and also as a function of Pr concentration. Emission, excitation and reflectivity spectral repartitions were investigated at various temperatures, as well as the luminescence decays. The origin of the red luminescence is discussed.

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