Yb3+/Eu3共掺Gd₃Zn₂GaGe₂O₁₂荧光粉制备及其上转换发光

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关键词：稀土离子； Eu3+ Yb3+ ；上转换；能量传递中图分类号：0482.31 文献标识码：ADOI： 10.37188/CJL.20250069 CSTR：32170.14.CJL.20250069

Preparation and Upconversion Luminescence of Y63+/Eu3+ Co-doped Gd3Zn2GaGe2O12 Phosphors

FANG Fang，LIU Haisheng，CHEN Zhehao，LI Benchun，ZHANG Dawei，YU Dechao* （SchoolofOptical-Electricaland Computer Engineering，UniversityofShanghaifor ScienceandTechnology， Shanghai 200093，China） Corresponding Author，E-mail：d.yu@usst.edu.cn

Abstract：Near-infrared excitable multicolor visible upconverting phosphors have beenbecomea hot research topic inrecent years，amongst which the explorations onred upconversion feature significant interests.Inthis paper，a seriesof Eu3+/Yb3+ codoped Gd3Zn2GaGe2O12 （abbreviated as GZGGO：Eu3+，Yb 3+）upconverting phosphors were prepared by high temperature solid state method．By means of ΔX -raypowder diffractometer（XRD），Rietveld refinement，scanning electron microscope（SEM），and energy-dispersive X-rayspectrometry（EDS），the phase identification，crystalstructure，particle morphologies and sizedistribution，and elementaldistribution were systematicall analyzed.Pumped by a NIR＼～980 nm laser，the GZGGO ∵Eu3+，Yb3+ sample yields a series of upconversion bands in visible region，exhibiting variablecolors from light green toorange，toorangered，andtored with the naked eye.A typical two-photon absorption process was responsible for the observed upconversion of Eu3+/Yb3+ couple，and an optimal sample was determined to be GZGGO ：35%Eu3+ 20%Yb3+ . Temperature-dependent upconversion was carried for the optimized sampleforprobing its relativelygood performance ofoptical thermal stability.Furtherdevelopmentof Eu3+/Yb3+ codoping would lead to breakthrough in fabricating novel red upconverting materials，and the related visual color control willofer big potentials in the application of multicolor fluorescent anti-counterfeiting.

Key words：rare earth ions; Eu3+ Yb3+ ；upconversion；energy transfer

1引言

近年来，正三价稀土离子 （RE3+） 掺杂的上转换无机发光材料具有极宽范围的多波段吸收和发射、极大的Stokes位移和较纯的光色发射等独特光学性质，正逐渐成为三维立体显示、荧光标记、光学传感、防伪、太阳电池等新兴应用的研究热点[3]。（剩余16261字）