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Investigation of optical properties: Eu with Al codoping in aluminum silicate glasses and glass‐ceramics

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Eu‐doped transparent oxyfluoride aluminosilicate glass was prepared by controlling with Al codoping of melt‐quenched glass fabricated under air atmosphere. In the presence of Al input, the photoluminescence emission spectra under 393 nm excitation shows a blue shift by adjusting the ratio of Eu3+ and Eu2+. After heat treatment of glass, the ratio of Eu3+ and Eu2+ of luminescence emission were changed by controlling treatment temperature. The PL intensity of Eu3+ and Eu2+ ions in the glass‐ceramics (GC) was much stronger than in the precursor glass (PG). The possible mechanism responsible for color tuneability of the ratio of Eu3+ and Eu2+ doped was discussed.
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Keywords: Eu3+ and Eu2+; NaYF4 nanocrystals; W‐LED quantum efficiency; glass‐ceramics; heat treatment

Document Type: Research Article

Publication date: July 1, 2017

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