Novel strategy for the enhancement of anti-counterfeiting ability of photochromic ceramics: Sm3+ doped KSr2Nb5O15 textured ceramics with anisotropic luminescence modulation behavior

被引：25

作者：

Cao, Shuyao ^{[1
]}

Chen, Qian ^{[1
]}

Li, Yangping ^{[1
]}

Wu, Changying ^{[2
]}

Xu, Jie ^{[1
]}

Cheng, Guanghua ^{[2
,3
]}

Gao, Feng ^{[1
]}

机构：

[1] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Sch Mat Sci & Engn,MIIT Key Lab Radiat Detect Mat, USI Inst Intelligence Mat & Struct,NPU QMUL Joint, Xian 710072, Peoples R China

[2] Northwestern Polytech Univ, Sch Elect & Informat, Xian 710072, Shaanxi, Peoples R China

[3] Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Xian 710119, Shaanxi, Peoples R China

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2021年 / 41卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Photochromic; Luminescence modulation; Anisotropy; Textured ceramics; KSr2Nb5O15; PHOTOLUMINESCENCE MODULATION; CONTRAST; READOUT; ENERGY; OXIDES; EU3+; RE;

D O I：

10.1016/j.jeurceramsoc.2021.03.039

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Sm3+ doped KSr2Nb5O15 (KSN-Sm) textured ceramics with anisotropic photochromic and luminescence modulation behaviors provided a new strategy for the enhancement of anti-counterfeiting ability. The KSN-Sm textured ceramics were fabricated by the tape casting technology, which exhibited obvious grain-orientation, with Lotgering factor f((00l)) of 0.62. The textured sample possessed evident difference of reflectivity, photochromic, luminescent and luminescence modulation properties among various grain-orientated directions. The difference of luminescent emission intensity was over than 30 % and the luminescence modulation ratios Delta R-t are 75.3 % and 63.3 % along paralleled and vertical [00l] orientations, respectively. These optical anisotropies were attributed to the different refractive indexes, distributions of photochromic centers and energy transfer rates at various orientations. This work is hopeful to achieve the multidirectional data recording and enhancement of anti-counterfeiting ability of photochromic ceramics by the anisotropic properties of textured ceramics.

引用

页码：4924 / 4933

页数：10

共 44 条

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