Spectroscopic characteristics and optimization of (Gd3+/Eu3+) co-doped in alkal borate glasses for solid state lighting material

초록

The physical, structural, and luminescence properties of lithium aluminum borate glasses as a function of Gd2O3 and Eu2O3 concentration were reported. The glasses composition of 25Li(2)O-5Al(2)O(3)-YGd2O3-(70-Y-Z)B2O3- ZEu(2)O(3 )system was successfully synthesized through a conventional melt-quenching technique. The various Gd2O3 concentration, 2.5 mol% is suitably added into the host composite, supporting by X-ray induced lumi-nescence and photoluminescence analysis. The influence of the Eu2O3 concentration doped glasses system has been investigated in different concentrations of Eu(3+)ions. It was found that the emission intensity increase with an increase of Eu2O3 concentration up to 3.0 mol% (luminescence quenching. The maximum intensity peaks were located at 614 nm (red emission), which was due to( 5) D-0 ->(7) F-2 transitions of Eu(3+)ions. The decay profile is measured to prove the occurrence of maximum energy transfer efficiency (Eu3+-Eu3+) obtained is as high as 15.36% for their potential candidature in solid state device applications.

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