Journal
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
Volume 40, Issue 12, Pages 3946-3955Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2020.05.003
Keywords
Photochromism; Thermoluminescence; Ferroelectric; Luminescence modulation; Photoluminescence
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Funding
- National Natural Science Foundation of China [11874032, 51790492]
- Natural Science Foundation of Ningbo [2018A610013, 2018A610007]
- Key Research and Development Plan of Zhejiang Province [2019C04009]
- K. C. Wong Magna Fund in Ningbo University [xkzwl1507]
- Fundamental Research Funds for the Provincial Universities of Zhejiang
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It is highly significant to develop multifunctional optical materials to meet the huge demand of modern optics. Usually, it is difficult to realize multiple optical properties in one single material. In this study, we choose ferroelectric (KxNa1-x)NbO3:Pr3+ (x = 0, 0.1, 0.2, 0.3, 0.4, 0.5) as hosts, and the rare earth ions Pr3+ are doped in them. For the first time, the integration of photoluminescence, photochromism, luminescence modulation and thermoluminescence and has been achieved in the Pr3+ doped (KxNa1-x)NbO3:Pr3+ ferroelectric ceramics. Upon 337- or 448-nm light irradiation, all samples show strong red emissions centered at 610 nm. The photochromic reaction increases with the increasing K+ content in the (KxNa1-x)NbO3:Pr(3+)ceramics. A strong photochromic reaction has been found in the (KxNa1-x)NbO3:Pr3+ ceramics. Accordingly, a large and reversible photoluminescence modulation (Delta R-t = 50.71%) is achieved via altering 395-nm-light irradiation and 200 degrees C thermal stimulus. All the prepared ceramics show a visible thermoluminescence when stimulated at 200 degrees C. The mechanisms of luminescence modulation and thermoluminescence are discussed. Present study could provide a feasible paradigm to realize multiple optical properties in one single material.
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