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Abstract 0.94Bi0.5Na0.5TiO3-0.06 K0.5Na0.5NbO3-xEr ceramics were prepared by the conventional solid-state reaction, and their bipolar fatigue and optical temperature sensing properties were investigated. Results showed that the addition of Er3+ led to… Click to show full abstract
Abstract 0.94Bi0.5Na0.5TiO3-0.06 K0.5Na0.5NbO3-xEr ceramics were prepared by the conventional solid-state reaction, and their bipolar fatigue and optical temperature sensing properties were investigated. Results showed that the addition of Er3+ led to the reduced NaBiO3 phase, which could effectively improve their fatigue behavior. Strong green upconversion luminescence from the two thermally coupled 2H11/2 and 4S3/2 levels of Er3+ was recorded in the temperature range from 20 °C to 200 °C under 980 nm laser excitation. The maximum sensing sensitivity was found to be 0.0022 K−1.
Journal Title: Materials Research Bulletin
Year Published: 2017
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