Vertically aligned 2D tin sulfide (SnS) nanoplates for selective detection of ethanol gas at room temperature

IF 1.9 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Semiconductor Science and Technology Pub Date : 2024-08-27 DOI:10.1088/1361-6641/ad6eaf

Hemant K Arora, Nikita Jain, Sunil Kumar, Nitin K Puri

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Abstract

Detection of ethanol gas quickly and efficiently at room temperature is crucial for ensuring environmental, human as well as industrial safety. In this work, we have demonstrated a chemiresistive room temperature ethanol gas sensor based on vertically aligned tin sulfide (SnS) nanoplates. X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), and Brunauer–Emmett–Teller (BET) analysis have revealed the formation of orthorhombic, vertically aligned SnS nanoplates with high specific surface area. The sensor has been fabricated by depositing the SnS powder sample on ITO sheets using electrophoretic deposition (EPD), followed by the deposition of silver (Ag) electrodes using the thermal evaporation technique. The sensor obtained has exhibited a response value (R_g/R_a) of 17.4–400 ppm ethanol gas concentration, a quick response, and a recovery time of 12.4 s and 20.2 s at room temperature. The sensor has demonstrated long-term stability of 15 min, impressive selectivity, and remarkable repeatability across three successive test cycles of ethanol gas at 400 ppm. Based on the experimental sensing results, a plausible mechanism has been proposed for the sensor. The sensing response of SnS-based sensor at room temperature expands its potential for innovative applications across industries, marking a significant advancement in sensing technology.

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垂直排列的二维硫化锡 (SnS) 纳米板用于室温下乙醇气体的选择性检测

在室温下快速有效地检测乙醇气体对于确保环境、人类和工业安全至关重要。在这项工作中，我们展示了一种基于垂直排列硫化锡（SnS）纳米板的化学电阻式室温乙醇气体传感器。X 射线衍射 (XRD)、场发射扫描电子显微镜 (FESEM) 和布鲁瑙尔-艾美特-泰勒 (BET) 分析表明，垂直排列的正交硫化锡纳米板具有很高的比表面积。利用电泳沉积（EPD）技术将 SnS 粉末样品沉积在 ITO 片上，然后利用热蒸发技术沉积银（Ag）电极，就制成了传感器。传感器的响应值（Rg/Ra）为 17.4-400 ppm，乙醇气体浓度为 17.4-400 ppm，响应速度快，室温下的恢复时间分别为 12.4 秒和 20.2 秒。该传感器在 400 ppm 乙醇气体的三个连续测试周期中表现出 15 分钟的长期稳定性、令人印象深刻的选择性和显著的可重复性。根据实验传感结果，提出了该传感器的合理机制。基于 SnS 的传感器在室温下的传感响应拓展了其在各行业创新应用的潜力，标志着传感技术的重大进步。

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来源期刊

Semiconductor Science and Technology 工程技术-材料科学：综合

CiteScore

4.30

自引率

5.30%

发文量

216

审稿时长

2.4 months

期刊介绍： Devoted to semiconductor research, Semiconductor Science and Technology''s multidisciplinary approach reflects the far-reaching nature of this topic. The scope of the journal covers fundamental and applied experimental and theoretical studies of the properties of non-organic, organic and oxide semiconductors, their interfaces and devices, including: fundamental properties materials and nanostructures devices and applications fabrication and processing new analytical techniques simulation emerging fields: materials and devices for quantum technologies hybrid structures and devices 2D and topological materials metamaterials semiconductors for energy flexible electronics.