Layered K(K1.5Eu0.5)Ta3O10 for humidity sensor

Dion–Jacobson structure layered perovskite K(K1.5Eu0.5)Ta3O10 was synthesized using a traditional solid-state reaction. A humidity sensor made from the obtained K(K1.5Eu0.5)Ta3O10 reveals that the sensitivity exhibits good linear response, and the response and recovery time is only about 6 s and 2 s at 85% RH respectively, showing fast response and recovery characteristics. Furthermore, the humidity hysteresis is only 7% RH. All these results indicate that K(K1.5Eu0.5)Ta3O10 can be utilized in high-performance humidity sensors.

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