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首页> 外文期刊>CERAMICS INTERNATIONAL >Luminescence modulation of the Eu3+ doped Srn+1SnnO3n+1 (n=1, 2, 5, infinity) ceramics based on photochromism and its application in anti-counterfeiting technology
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Luminescence modulation of the Eu3+ doped Srn+1SnnO3n+1 (n=1, 2, 5, infinity) ceramics based on photochromism and its application in anti-counterfeiting technology

机译：基于光学变频的Eu3 +掺杂SRN + 1SnNO3N + 1（n = 1,2,5，Infinity）陶瓷的发光调节及其在防伪技术中的应用

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摘要

The structure and optical properties of Srn+1SnnO3n+1 ceramics greatly depend on the n value. Thus, we fabricated four compositions, namely Srn+1SnnO3n+1:Eu3+ (n = 1, 2, 5, infinity) ceramics, and their crystal structure, photoluminescence, photochromism and luminesce modulation properties have been investigated. It is found that excellent photochromism and luminesce modulation properties are found in Sr2SnO4:Eu3+ and Sr3Sn2O7:Eu3+ ceramics. After 280-nm light irradiation, the Sr2SnO4:Eu3+ ceramics transform into gray purple from primal white. Meanwhile, luminescence intensity decrement ratio Delta I-dec of the colored Sr2SnO4:Eu3+ reaches a high value of 80.8% under optimized irradiation wavelength. The decreased luminescence intensity of Eu3+ can be completely recovered via 450-nm light irradiation. The Delta I-dec, of Sr3Sn2O7:Eu3+ ceramic reaches 53.1%, and the decreased luminesce intensity can not be covered by light irradiation, only can be covered by a high temperature stimulus at 400 degrees C. Finally, we successfully fabricated a flexible membrane using Sr2SnO4:Eu3+ and PDMS for anti-counterfeiting applications.
机译：SRN + 1SNNO3N + 1陶瓷的结构和光学性质大大取决于N值。因此，我们制造了四种组合物，即Srn + 1sNNO 3N + 1：Eu3 +（n = 1,2,5，无穷大）陶瓷，并研究了它们的晶体结构，光致发光，光致变色和发光调制性能。发现优异的光致变色和发光调制特性在SR2SNO4：EU3 +和SR3SN2O7：EU3 +陶瓷中找到。在280纳米光照射后，SR2SNO4：EU3 +陶瓷从原始白色转变成灰色紫色。同时，在优化的照射波长下，彩色SR2SNO4的发光强度递增率Delta I-DED达到80.8％的高值。 EU3 +的降低的发光强度可以通过450nm光照射完全回收。 SRT3SN2O7的Delta I-Dec：Eu3 +陶瓷达到53.1％，并且降低的发光强度不能被光辐射覆盖，只能在400℃下覆盖高温刺激。最后，我们成功地制造了柔性膜使用SR2SNO4：EU3 +和PDM进行防伪应用。

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