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Nano Pt-decorated transparent solution-processed oxide semiconductor sensor with ppm detection capability

机译：纳米PT装饰透明溶液加工氧化物半导体传感器，具有PPM检测能力

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摘要

In this study, we fabricated a transparent Pt-decorated indium gallium zinc oxide (IGZO) thin film based on a solution process to demonstrate a portable, low-cost volatile organic compound (VOC) based real-time monitoring system with the detection capability at as low as 1 ppm. The Pt/IGZO sensor shows remarkable response characteristics upon exposure of isobutylene (2-methylpropene) gas down to 1 ppm while also maintaining the reliability and reproducibility of the sensing capability, which is almost comparable to a commercial VOC sensor based on a photoionization detector (PID) method. For 1 ppm of isobutylene gas, the response and recovery time of the sensor estimated were as low as 25 s (S90) and 80 s (R90), respectively. The catalytic activity of Pt nanoparticles on an IGZO nano-thin film plays a key role in drastically enhancing the sensitivity and dynamic response behaviour of the VOC sensor. Furthermore, the solution-processed IGZO thin film decorated with Pt nanoparticles also represents a highly transparent (in visible region, similar to 90%) and low-cost fabrication platform, thereby, facilitating the optical visibility and disposability for future applications in the field of electronics. Therefore, we believe that the nano-Pt/IGZO hybrid material for VOC sensor developed by us will pave a way to detect any harmful chemical gases and VOCs in various environments.
机译：在这项研究中，我们基于溶液方法制造了一种透明的PT装饰铟镓氧化锌（IGZO）薄膜，以证明一种基于便携式低成本的挥发性有机化合物（VOC）的实时监测系统，具有检测能力低至1 ppm。在异丁烯的暴露的Pt / IGZO传感器示出显着的响应特性（2-甲基丙烯）气体向下至1ppm，同时还保持所述感测能力，这是基于光致电离检测器上几乎比得上商业VOC传感器的可靠性和再现性（ PID）方法。对于1ppm的异丁烯气体，传感器的响应和恢复时间估计分别低至25秒（S90）和80秒（R90）。 Pt纳米粒子对IGZO纳米薄膜的催化活性在大幅增强VOC传感器的灵敏度和动态响应行为方面起着关键作用。此外，用Pt纳米颗粒装饰的溶液加工的IgZO薄膜还代表高度透明的（在可见区域，类似于90％）和低成本制造平台，从而促进了用于未来应用领域的光学能见度和可持续性电子产品。因此，我们认为美国开发的VOC传感器的纳米PT / IGZO混合材料将为各种环境中的任何有害化学气体和VOC进行铺平。

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  • 来源
    《RSC Advances》 |2019年第11期|共6页
  • 作者

    Kang Jingu; Kim Kyung-Tae; Jeon Seoung-Pil; Facchetti Antonio; Kim Jaekyun; Park Sung Kyu;

  • 作者单位

    Chung Ang Univ Sch Elect &

    Elect Engn Seoul 06974 South Korea;

    Chung Ang Univ Sch Elect &

    Elect Engn Seoul 06974 South Korea;

    Chung Ang Univ Sch Elect &

    Elect Engn Seoul 06974 South Korea;

    Northwestern Univ Dept Chem 2145 Sheridan Rd Evanston IL 60208 USA;

    Hanyang Univ Dept Photon &

    Nanoelect Ansan 15588 Gyeonggi Do South Korea;

    Chung Ang Univ Sch Elect &

    Elect Engn Seoul 06974 South Korea;

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  • 正文语种 eng
  • 中图分类 化学;
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