TY  - JOUR
AU  - Zhou, Yang
AU  - Xiong, Rui
AU  - Wang, Peng
AU  - Wu, Xiao
AU  - Sa, Baisheng
AU  - Lin, Cong
AU  - Gao, Min
AU  - Lin, Tengfei
AU  - Zhao, Chunlin
PY  - 2022
TI  - Strain and illumination triggered regulations of up-conversion luminescence in Er-doped Bi0.5Na0.5TiO3-BaTiO3/Mica flexible multifunctional thin films
JO  - Journal of Materiomics
SN  - 2352-8478
SP  - 586
EP  - 595
VL  - 8
IS  - 3
AB  - External stimuli induced effective regulations of luminescent material are of significant interest in the development of smart optical devices. Here, by simply doping with Er3+ in the 0.94Bi0.5Na0.5TiO3-0.06BaTiO3 (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 illumination-mediated 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.
UR  - https://doi.org/10.1016/j.jmat.2021.12.002
DO  - 10.1016/j.jmat.2021.12.002