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Mechanically Excited Multicolor Luminescence in Lanthanide Ions
Author(s) -
Du Yangyang,
Jiang Yue,
Sun Tianying,
Zhao Jianxiong,
Huang Bolong,
Peng Dengfeng,
Wang Feng
Publication year - 2019
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201807062
Subject(s) - lanthanide , materials science , luminescence , mechanoluminescence , ion , excited state , doping , emission spectrum , optoelectronics , annealing (glass) , phosphor , nanotechnology , analytical chemistry (journal) , spectral line , atomic physics , composite material , chemistry , physics , organic chemistry , chromatography , astronomy
Mechanoluminescence (ML) featuring photon emission by mechanical stimuli is promising for applications such as stress sensing, display, and artificial skin. However, the progress of utilizing ML processes is constrained by the limited range of available ML emission spectra. Herein, a general strategy for expanding the emission of ML through the use of lanthanide emitters is reported. A lithium‐assisted annealing method for effective incorporation of various lanthanide ions (e.g., Tb 3+ , Eu 3+ , Pr 3+ , Sm 3+ , Er 3+ , Dy 3+ , Ho 3+ , Nd 3+ , Tm 3+ , and Yb 3+ ) into CaZnOS crystals that are identified as one of the most efficient host materials for ML is developed. These doped CaZnOS crystals show efficient and tunable ML spanning full spectrum from violet to near infrared. The multicolor ML materials are used to create encrypted anticounterfeiting patterns, which produce spatially resolvable optical codes under single‐point dynamic pressure of a ballpoint pen.