Journal
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
Volume 101, Issue 6, Pages 2305-2312Publisher
WILEY
DOI: 10.1111/jace.15389
Keywords
materials; properties; photochromic materials; properties; photoluminescence; piezoelectric
Categories
Funding
- Natural Science Foundation of China [51562030, 51502018]
- Natural Science Foundation of Inner Mongolia [2015BS0503]
- Young Academic Core Program of Inner Mongolia University of Science and Technology [2016YQL01]
- Program for Young Talents of Science and Technology in Universities of Inner Mongolia Autonomous Region [NJYT-17-A10, NJYT-17-B09]
- Program for Innovative Research Team in Universities of Inner Mongolia Autonomous Region [NMGIRT-A1605]
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A significant luminescence modulation behavior based on photochromic reactions was observed in Ho3+-doped (Na0.52K0.48)(0.92)Li0.08NbO3 ceramics, fabricated by the conventional solid-state reaction method. Under visible light irradiation (407 nm) for 20 second, the samples changed pale gray from initial pale green, and returned to their original color by a thermal stimulus of 230 degrees C for 10 minutes, showing typical photochromic phenomenon. Under 453 nm excitation, the samples exhibited strong green emission at 551 nm. Interestingly, their green emission intensity can be effectively tailored by controlling photochromic reaction processes (irradiation wavelength and time), and the luminescent modulation ratio (R-t) reaches up to 77%. And, the R-t value has no any obvious degradation after 10 cycles by alternating visible light irradiation and thermal stimulus, showing excellent reversibility. These results make it potential applications in many fields as a kind of multifunctional material.
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