Luminescence and energy transfer of Ce3 +/Tb3 + ions in barium–gadolinium–Aluminum borosilicate (cas 12788-79-3) glasses

Add time:08/29/2019    Source:sciencedirect.com

Ce3 +–doped, Tb3 +–doped and (Ce3 +, Tb3 +)–codoped BaO–Gd2O3–Al2O3–B2O3–SiO2 glasses were prepared by high temperature melting method and their luminescence properties have been investigated under UV excitation. Ce3 +–doped borosilicate glass has a strong purplish–blue emission with the maximum about at 399 nm. Tb3 +–doped borosilicate glass shows bright green emission at about 545 nm. (Ce3 +, Tb3 +)–codoped borosilicate glasses present a broad band emission ranging from 350 to 475 nm except emitting light at about 490, 545, 588 and 624 nm. There is an effective energy transfer from Ce3 + ion to Tb3 + ion and Ce3 + ion strongly sensitizes the luminescence of Tb3 + ion in (Ce3 +, Tb3 +)–codoped borosilicate glasses. A fast luminescence decay time of Tb3 + ion is in an order of ms in (Ce3 +, Tb3 +)–codoped borosilicate glasses, which indicates it could be useful for X–ray detection for slow event.

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