1. Photoluminescence and optical temperature sensing in Sm3+-doped Ba0.85Ca0.15Ti0.90Zr0.10O3 lead-free ceramics.
- Author
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Ma, Chunlin, Wang, Xingyu, Gan, Zhixing, Tan, Weishi, Wang, Xiaoxiong, Zhang, Jia, and Zhou, Weiping
- Subjects
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PHOTOLUMINESCENCE , *DOPING agents (Chemistry) , *FERROELECTRICITY , *ULTRAVIOLET radiation , *CERAMICS - Abstract
Abstract A series of orange-red emitting Sm3+ activated Ba 0.85 Ca 0.15 Ti 0.90 Zr 0.10 O 3 (BCZT: x Sm3+, x = 0.001–0.007) are synthesized by a conventional solid-state reaction method. The Sm3+ ions composition dependent photoluminescence properties are systematically investigated. Under the excitation of a 407 nm near-ultraviolet light, the ceramics exhibit strong characteristic emission of Sm3+ ions with dominant orange-red emission peak at around 595 nm, which is ascribed to the transition of 4G 5/2 → 6H 7/2. The BCZT: 0.004Sm3+ ceramic displays the optimal emission among these Sm3+-doped BCZT solid solutions. Moreover, the photoluminescence intensity exhibits extremely sensitive to temperature, suggesting that BCZT: 0.004Sm3+ could be applicable for temperature sensing. A maximum relative sensitivity of 1.89% K−1 at 453 K is obtained. Furthermore, the existence of ferroelectricity in the BCZT host combined with Sm3+ activated photoluminescence properties could be useful for developing optical-electro multifunctional materials and devices. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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