Synthesis and Characterization of Indium-Doped SnO2-Based Impedance Spectroscopy Sensor for Real-Time Humidity Sensing Applications

IF 2.4 4区材料科学 Q2 CRYSTALLOGRAPHY

Crystals Pub Date : 2024-01-15 DOI:10.3390/cryst14010082

Birhanu Alemayehu, Eunsung Shin, Vladimir Vasilyev, Guru Subramanyam

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引用次数: 0

Abstract

Metallic transition-metal dichalcogenides are emerging as promising electrode materials for applications such as 2D electronic devices owing to their good electrical conductivity. In this study, a high-performance humidity sensor based on NbTe2 electrode material and an indium-doped SnO2 thin film sensing layer was fabricated using a pulsed laser deposition system. The morphology, structural, elemental compositions, and electrical properties of the as-deposited samples were characterized. Additionally, the humidity sensing response of the fabricated sensor with In-doped SnO2 (8:92 wt%) sensing film was evaluated in a wide range of relative humidity at room temperature. The results demonstrated that the humidity sensor based on In-doped SnO2 exhibited a high sensitivity of 103.1 Ω/%RH, fast response and recovery times, a low hysteresis value, good linearity, and repeatability. In addition, the sensor had good long-term stability, with a variation in impedance of less than 3%. The results indicated that the humidity sensor could be suitable for practical humidity sensing applications.

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用于实时湿度传感应用的掺铟二氧化锡阻抗光谱传感器的合成与特性分析

金属过渡金属二钴化物因其良好的导电性，正在成为二维电子器件等应用领域前景广阔的电极材料。本研究利用脉冲激光沉积系统，在 NbTe2 电极材料和掺铟 SnO2 薄膜传感层的基础上制备了一种高性能湿度传感器。研究人员对沉积样品的形态、结构、元素组成和电学特性进行了表征。此外，还在室温下的宽相对湿度范围内评估了使用掺 In SnO2（8:92 wt%）传感薄膜制造的传感器的湿度传感响应。结果表明，基于掺 In SnO2 的湿度传感器具有 103.1 Ω/%RH 的高灵敏度、快速响应和恢复时间、低滞后值、良好的线性和可重复性。此外，该传感器还具有良好的长期稳定性，阻抗变化小于 3%。研究结果表明，该湿度传感器适用于实际的湿度传感应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Crystals CRYSTALLOGRAPHYMATERIALS SCIENCE, MULTIDIS-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

4.20

自引率

11.10%

发文量

1527

审稿时长

16.12 days

期刊介绍： Crystals (ISSN 2073-4352) is an open access journal that covers all aspects of crystalline material research. Crystals can act as a reference, and as a publication resource, to the community. It publishes reviews, regular research articles, and short communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. Therefore, there is no restriction on article length. Full experimental details must be provided to enable the results to be reproduced. Crystals provides a forum for the advancement of our understanding of the nucleation, growth, processing, and characterization of crystalline materials. Their mechanical, chemical, electronic, magnetic, and optical properties, and their diverse applications, are all considered to be of importance.