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  

作　　者：Yang Zhou Rui Xiong Peng Wang Xiao Wu Baisheng Sa Cong Lin Min Gao Tengfei Lin Chunlin Zhao 

机构地区：[1]College of Materials Science and Engineering,Fuzhou University,Fuzhou,350108,China

出　　处：《Journal of Materiomics》2022年第3期586-595,共10页无机材料学学报（英文）

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).

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.

关 键 词：Luminescent-ferroelectrics Flexibility Mechanical strain Up-conversion photoluminescence PHOTOCHROMIC 

分 类 号：O43[机械工程—光学工程] TN2[理学—光学]