A Comparative Study of SiO2:Tb3+@Gd2O3:Eu3+ and Its Inverted Tb3+-Eu3+ Core-Shell Phosphors.
Inorg Chem
; 63(22): 10167-10178, 2024 Jun 03.
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| ID: mdl-38775359
ABSTRACT
How to effectively improve energy transfer efficiency and luminous intensity inspired us to synthesize a series of SiO2x%Tb3+@Gd2O3y%Eu3+ samples, study their luminescence properties and interfacial energy transfer (IET), and compare with SiO2x%Eu3+@Gd2O3y%Tb3+. The results show that SiO2x%Tb3+@Gd2O3y%Eu3+ can exhibit adjustable multicolor luminescence from red to green at different concentrations of Eu3+ and Tb3+ or under different excitation wavelengths, and there exists efficient IET from Tb3+ to Eu3+ in SiO2x%Tb3+@Gd2O3y%Eu3+ and SiO2x%Eu3+@Gd2O3y%Tb3+, which improves the energy transfer efficiency and luminous intensity. In addition, the luminescence properties are different between SiO23%Tb3+@Gd2O33%Eu3+ and SiO23%Eu3+@Gd2O33%Tb3+, and the energy transfer efficiency of Tb3+ â Eu3+ in SiO23%Tb3+@Gd2O33%Eu3+ is obviously higher than that in SiO23%Eu3+@Gd2O33%Tb3+. The present study not only developed a kind of multicolor luminescent phosphor but also offered an important new strategy for improving the energy transfer efficiency and luminescent intensity.
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Inorg Chem
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2024
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