Effect of SnO2 particle size on gas-sensing performance for ppb-level NO2 at room temperature under UV light

IF 2.8 4区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Materials Science: Materials in Electronics Pub Date : 2024-01-26 DOI:10.1007/s10854-023-11876-8

Yang Li, Lili Li, Ranran Zhang, Zhihua Ying, Yang Zhou, Wei Wu, Gaofeng Wang

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Abstract

The particle sizes of sensitive material have significant influence on the gas property. We reported at room temperature NO₂ gas sensor using SnO₂ particles of various size to investigate their impact on sensing performance in a wide concentration range, even at ppb level. Results showed that the gas response increases with the decrease of particle size, mainly attributed to the larger specific surface area of small size to absorb more target gas. The SnO₂-40 nm exhibited the highest response to low concentrations of NO₂ gas, reaching a value of 106 at 5 ppm, and it can detect trace amounts of NO₂ with a detection limit of 100 ppb. The mechanism of gas sensing property is discussed, highlighting the relationship between small size and large specific surface area. This paper provides useful guideline for fabrication high-performance gas sensor with optimized particle sizes.

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二氧化锡粒度对室温紫外光下ppb级二氧化氮气体传感性能的影响

敏感材料的颗粒大小对气体特性有重大影响。我们报道了在室温下使用不同粒径二氧化锡颗粒的二氧化氮气体传感器，以研究它们在很宽的浓度范围内（甚至在 ppb 级）对传感性能的影响。结果表明，气体响应随颗粒尺寸的减小而增加，这主要归因于小尺寸颗粒具有更大的比表面积，能吸收更多的目标气体。SnO2-40 nm 对低浓度 NO2 气体的响应最高，在 5 ppm 时达到 106，可以检测痕量 NO2，检测限为 100 ppb。论文讨论了气体传感特性的机理，强调了小尺寸和大比表面积之间的关系。本文为利用优化的颗粒尺寸制造高性能气体传感器提供了有用的指导。

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

Journal of Materials Science: Materials in Electronics 工程技术-材料科学：综合

CiteScore

5.00

自引率

7.10%

发文量

1931

审稿时长

2 months

期刊介绍： The Journal of Materials Science: Materials in Electronics is an established refereed companion to the Journal of Materials Science. It publishes papers on materials and their applications in modern electronics, covering the ground between fundamental science, such as semiconductor physics, and work concerned specifically with applications. It explores the growth and preparation of new materials, as well as their processing, fabrication, bonding and encapsulation, together with the reliability, failure analysis, quality assurance and characterization related to the whole range of applications in electronics. The Journal presents papers in newly developing fields such as low dimensional structures and devices, optoelectronics including III-V compounds, glasses and linear/non-linear crystal materials and lasers, high Tc superconductors, conducting polymers, thick film materials and new contact technologies, as well as the established electronics device and circuit materials.