Luminescence modulation of the Eu3+ doped Srn+1SnnO3n+1 (n=1, 2, 5, ∞) ceramics based on photochromism and its application in anti-counterfeiting technology. Issue 8 (1st June 2020)

• Record Type: Journal Article
• Authors: Tang, Jin; Mu, Yuexuan; Du, Peng; Luo, Laihui
• Is Part Of: Ceramics international. Volume 46:Issue 8(2020)Part B
• Page Start: 11962
• Page End: 11969
• Publication Date: 2020-06-01
• Subjects: Photochromism -- Luminescence modulation -- Perovskite -- Flexibility; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2020.01.235
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: The structure and optical properties of Srn+1 Snn O3n+1 ceramics greatly depend on the n value. Thus, we fabricated four compositions, namely Srn+1 Snn O3n+1 :Eu 3+ (n = 1, 2, 5, ∞) 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 Sr2 SnO4 :Eu 3+ and Sr3 Sn2 O7 :Eu 3+ ceramics. After 280-nm light irradiation, the Sr2 SnO4 :Eu 3+ ceramics transform into gray purple from primal white. Meanwhile, luminescence intensity decrement ratio Δ I dec of the colored Sr2 SnO4 :Eu 3+ reaches a high value of 80.8% under optimized irradiation wavelength. The decreased luminescence intensity of Eu 3+ can be completely recovered via 450-nm light irradiation. The Δ I dec of Sr3 Sn2 O7 :Eu 3+ 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 °C. Finally, we successfully fabricated a flexible membrane using Sr2 SnO4 :Eu 3+ and PDMS for anti-counterfeiting applications.