Abstract
This work is focused on amplifying the violet blue luminescence emission of Pr3+ ions in lead arsenate glasses sensitized with Ti ions. The intensity of 3P0 → 3H4 (blue emission) of Pr3+ ions is found to be enhanced by nearly 5 times when the concentration of the codopant TiO2 is increased from 0 to 5.0 mol%. The enhancement is attributed to the combination of emissions from 3P0 → 3H4 of Pr3+ ions and from the substitutionally positioned octahedral Ti4+ ions that exhibit the luminescence emission in the blue region. The emission mechanism is further analyzed quantitatively using kinetic rate equations. Overall, the luminescence emission from such codoped glasses is predicted to be useful for the applications in laser printing, digital photofinishing and data recording etc.
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