首页|Dynamic manipulation of multimodal emission in Er3+-activated non-core-shell structure for optical thermometry and information security

Dynamic manipulation of multimodal emission in Er3+-activated non-core-shell structure for optical thermometry and information security

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Regulating luminescent dynamics of lan-thanide-based luminescent materials via external stimuli is of great significance in the fields of optical thermometry and high-level anti-counterfeiting.However,it is still a huge challenge to realize multimodal emissions with tun-able color outputs from a single activator in simple struc-tures via smart dynamic control of photon transition processes.Herein,we present a mechanistic strategy to achieve multimodal luminescence of Er3+activators with color-switchable outputs in a non-core-shell host.Under the control of excitation dynamics(λex=980,808,1532,377 nm),the population among the intermediate energy levels of Er3+and the interaction between Er3+ and Yb3+could be precisely modulated through energy transfer and migration processes,leading to the generation of color-tunable multimodal luminescence upon diverse excitation modes(non-steady-state,single-/dual-wavelength steady,thermal activation).Inspired by its special luminescent performance,the as-obtained material exhibits great potential in noncontact thermometry,multimodal anti-counterfeiting,and high-capacity information encryption by performing a series of proof-of-concept experiments.Our findings might provide a conceptual model to modu-late the luminescent dynamics in a simple-structured sys-tem for the generation of color-adjustable multimodal emissions,which is convenient for the development of advanced luminescent materials toward versatile cutting-edge applications.

Lanthanide ionsMultimodal emissionUpconversionDownshiftingAnti-counterfeitingLuminescent thermometry

Xuan Liu、Zi-Xia Lin、Yin-Biao Shi、Xiao-Yan Wang、Ming-Ye Ding、Xiao-Fei Yang

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College of Science,Nanjing Forestry University,Nanjing 210037,China

Testing Center,Yangzhou University,Yangzhou 225009,China

Natural Science Foundation of Jiangsu ProvinceNational Natural Science Foundation of ChinaScience Fund for Distinguished Young ScholarsNanjing Forestry UniversityAdvanced Analysis & Testing Center of Nanjing Forestry University for material characterizations

BK2021128051702074

2024

10.1007/s12598-023-02492-w

稀有金属(英文版)
中国有色金属学会

稀有金属(英文版)

CSTPCDEI
影响因子：0.801
ISSN：1001-0521
年,卷(期)：2024.43(4)
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