Ca3Ga4O9 :Tb³+, Eu3+ 荧光粉的制备与光色调控

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中图分类号：0482.31 文献标识码：ADOI：10.37188/CJL.20250095 CSTR：32170.14.CJL.20250095

Preparation and Color Tune in ， Eu3+ Phosphors

WANGJin，ZHAOShujuan，TANGPei，LIGuihua，CAIGemei* （SchoolofMaterials ScienceandEngineering，CentralSouth University，Changsha41oo83，China） *Corresponding Author，E-mail：caigemei@csu.edu.cn

Abstract：The tunable luminescent phosphors in terms of light color have significant application value in fields such as healthy lighting，fluorescent anti-counterfeiting，and optical temperature measurement.Based onthe bluegreen tunable phosphor，this paper designs the incorporation of Eu3+ which can emit red light，and synthesizes a series of phosphors ， xEu3+ ，achieving continuous regulation of its light color fromgreentored.With the increaseof Eu3+ doping concentration from x=O.O1 to x=O.O9，the energy transfer efficiency from Tb3+ to Eu3+ increases from 20% to 90. 8% ，and the color temperature decreases from 6 O83 K to1750 K. Thecalculation results and energy level analysis results show that the energy transfer from Tb3+ to Eus+ is due to dipole-dipole interaction and cross relaxation process.When the temperature of（ ∴a2，96（fa409; 0.02Tb³+，0.02Eu³phosphor reaches 398 K，the luminescence intensities of Tb3+ and Eu3+ remain at 46. 6% and 49.8% of those at 298 K， respectively，andthethermalstabilitiesofthetwoactivatorionsareclose.Theresearchresultsof thiswork havecertain guiding and reference significanceforthe development of new ultraviolet-excited color-tunable phosphors.

KeyWords：phosphor; Tb³+/Eu3+ doped;color-tunable；energy transfer

1引言

无机发光材料在健康照明、高功率显示、光学测温、应力传感、闪烁成像等领域具有非常重要的应用价值5。（剩余19964字）