木虫 (小有名气)
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In this work, we take Gd3+ ions as the sensitizer, silicate oxyfluoride scintillating glass of various Tb3+ content were prepared by high temperature melt quenching method. The luminescent properties of Tb3+ ions and energy transfer from Gd3+ to Tb3+ ions in glasses were investigated by the transmittance, photoluminescence and fluorescence decay spectroscopy studies. The results clearly indicated that as the concentration of Tb3+ ions increases the emission intensities of luminescence peaks origination from Tb3+ ion increase and the strongest intensity with the Tb3+ content of 6 mol%. Furthermore, energy transfer efficiency from Gd3+ to Tb3+ ions can be close to 100% when the content of Tb3+ ions exceeds 5 mol%. The results of our investigation provided an effective way to improve the optical properties of Tb3+-doped scintillating glasses, which will play an important role to prompt its practical application in the future. |
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