Aluminum Doped Zinc Oxide and Silver Nanowire Composite Based Printed CO$_{2}$ Gas Sensor

IF 2.2 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
Nikhila Patil;Neethu Thomas;Neha Sharma;Parasuraman Swaminathan;P. Sumathi
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引用次数: 0

Abstract

Carbon dioxide (CO$_{2}$) is a significant greenhouse gas and an essential indicator of effective air circulation in enclosed spaces, requiring precise and continuous monitoring. Traditional chemiresistive CO$_{2}$ sensors have high operating temperatures that require external heating elements limiting their applicability in low-power portable electronics. This work demonstrates a miniaturized printed CO$_{2}$ gas sensor, based on aluminum-doped zinc oxide (AZO) and silver nanowire (Ag NW) nanocomposite ink, which operates efficiently at room temperature. The AZO-Ag NW nanocomposite ink is optimized for direct ink writing (DIW) to obtain a uniform printed pattern. The composite ink helps overcome the inherent high resistance of AZO nanostructures by taking advantage of Ag NW's high conductivity and surface reactivity. The sensor shows a quick response time of 19 s and a recovery time of 36 s for 400 ppm CO$_{2}$. The sensor exhibits a response (R) of 32.5% with a limit of detection of 24.04 ppm, while operating at a low bias of 1 V. The integration of DIW, cost-effective ink formulation, and scalable fabrication is a significant advancement for real-time CO$_{2}$ monitoring at low power.
基于铝掺杂氧化锌和银纳米线复合材料的印刷CO${2}$气体传感器
二氧化碳(CO$_{2}$)是一种重要的温室气体,是封闭空间有效空气循环的重要指标,需要精确和连续的监测。传统的化学CO传感器工作温度高,需要外部加热元件,限制了它们在低功耗便携式电子产品中的适用性。本工作展示了一种基于掺铝氧化锌(AZO)和银纳米线(Ag NW)纳米复合油墨的小型化印刷CO${2}$气体传感器,该传感器在室温下有效工作。对AZO-Ag NW纳米复合墨水进行了优化,使其适合直接墨水书写(DIW),以获得均匀的印刷图案。该复合油墨利用Ag NW的高导电性和表面反应性,克服了AZO纳米结构固有的高电阻。该传感器对400 ppm CO的响应时间为19 s,恢复时间为36 s。该传感器的响应(R)为32.5%,检测限为24.04 ppm,工作在1 V的低偏置下。DIW、低成本的油墨配方和可扩展制造的集成是低功耗实时CO监测的重大进步。
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
IEEE Sensors Letters
IEEE Sensors Letters Engineering-Electrical and Electronic Engineering
CiteScore
3.50
自引率
7.10%
发文量
194
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