Production and characterization of calcium aluminates glasses doped with rare earths Dy3+ and Sm3+, and co-doped with Dy3+/Sm3+ for white light generation
Keywords:
Luminescence. Glasses. Rare earth. White light generation.Abstract
This work consists of the production and characterization of Dy3+/Sm3+ doped calcium aluminate glasses, with the proposed application in white light generation. The glasses were produced using the melt-quenching technique and exhibited an increase in density with the addition of dopants. The absorption and luminescence spectra revealed the characteristic transitions of rare earth elements. For the co-doped samples, under excitation at 360 nm, the insertion of 0.5 mol% of samarium shifted the CCT from 4002 K to 3433 K, in the region of warmer white light. From this perspective, this work demonstrates the possibility of controlling the emitted light coloration.
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