Strain and illumination triggered regulations of up-conversion luminescence in Er-doped Bi_(0.5)Na_(0.5)TiO_(3)-BaTiO_(3)/Mica flexible multifunctional thin films
[sbnd]BaTiO3/Mica flexible multifunctional thin films作者机构：College of Materials Science and EngineeringFuzhou UniversityFuzhou350108China
出 版 物：《Journal of Materiomics》 (无机材料学学报（英文）)
年 卷 期：2022年第8卷第3期
页 面：586-595页
核心收录：
学科分类：070207[理学-光学] 07[理学] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0803[工学-光学工程] 0702[理学-物理学]
基 金：This work was supported by the National Natural Science Foundation of China(No.52072075,21973012) the Natural Science Foundation of Fujian Province(No.2018J01753 and 2019J01228).
主 题：Luminescent-ferroelectrics Flexibility Mechanical strain Up-conversion photoluminescence Photochromic
摘 要：External stimuli induced effective regulations of luminescent material are of significant interest in the development of smart optical devices.Here,by simply doping with Er^(3+) in the 0.94Bi_(0.5)Na_(0.5)TiO_(3)-0.06BaTiO_(3)(BNTBT)ferroelectric host,using the bendable mica substrate,and exerting mechanical strain(bending)or light illumination(via photochromic reaction),the all-inorganic,highly-transparent and flexible Er-doped BNTBT/Mica luminescent-ferroelectric thin films were designed and fabricated,displaying strain-induced dramatically elevation of up-conversion photoluminescence(PL)intensity,suppression of PL concentration quenching,outstanding endurance and durability,convenient illuminationmediated PL quenching.And the strain-induced structural changes and local lattice distortions of the thin films were further explored through theoretical calculations and Raman measurement.Our results can supply the guidance of designing other luminescent-ferroelectric materials with controlled PL properties via easy mechanical/photo stimuli for expanding the application of multifunctional wearable memory devices.
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