The rapid response and high sensitivity of a ruthenium-doped copper ferrite thin film (Ru–CuFe2O4) sensor,RSC Advances

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The rapid response and high sensitivity of a ruthenium-doped copper ferrite thin film (Ru–CuFe2O4) sensor
RSC Advances ( IF 3.9 ) Pub Date : 2020-4-3 , DOI: 10.1039/d0ra00507j
V Manikandan ₁ , Ali Mirzaei ₂ , S Sikarwar ₃ , B C Yadav ₃ , S Vigneselvan ₄ , A Vanitha ₄ , J Chandrasekaran ₅

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A sensor displaying a rapid response and high sensitivity was developed by following a simple route. Ionic defects in this sensor were explored using X-ray diffraction analysis. In general, such defects arise from a mismatch of ionic radii, which actually improves the sensing performance. SEM and TEM images of the currently produced particles demonstrated negligible agglomeration, which greatly enhanced the flow of water molecules through the particles. The current sensor showed a rapid response to changes in humidity. Its sensing performance was classified into three different ranges of humidity. Of these humidity ranges, the sensor showed the highest sensitivity (8.84 MΩ per %RH) at low relative humidity (10–20% RH). Furthermore, the sensitivity fall off as the RH was increased from 20 to 99%. The sensor showed a rapid response time of 20 s. Also, the sensor showed 92.98% reproducibility and few effects of aging.

中文翻译：

钌掺杂铜铁氧体薄膜 (Ru-CuFe2O4) 传感器的快速响应和高灵敏度

通过遵循简单的路线开发了一种显示快速响应和高灵敏度的传感器。使用 X 射线衍射分析探索了该传感器中的离子缺陷。一般来说，这种缺陷是由离子半径的不匹配引起的，这实际上提高了传感性能。目前生产的颗粒的 SEM 和 TEM 图像显示出可忽略不计的团聚，这极大地增强了水分子通过颗粒的流动。电流传感器显示出对湿度变化的快速响应。其传感性能分为三个不同的湿度范围。在这些湿度范围中，传感器在低相对湿度（10-20% RH）下表现出最高的灵敏度（8.84 MΩ/%RH）。此外，随着 RH 从 20% 增加到 99%，灵敏度下降。传感器显示出 20 秒的快速响应时间。

更新日期：2020-04-03

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