Scholarlink

<p>The identification of toxic gases, including ammonia (NH<sub>3</sub>) and nitrogen dioxide (NO<sub>2</sub>), at room temperature (RT) is essential for environmental monitoring and public health. Recently, halide perovskites (HP) have surfaced as intriguing candidates for gas sensing applications, attributed to their adjustable optoelectronic characteristics and robust interactions with gases. This research conducts a feasibility study of HP (MAPbCl<sub>3</sub>, CsPbCl<sub>3</sub>, and FAPbCl<sub>3</sub>)-based gas sensor for the detection of NH<sub>3</sub> and NO<sub>2</sub> utilizing COMSOL Multiphysics. The sensor architecture comprises of a HP sensing layer, interdigitated gold electrodes, a ruthenium dioxide heating element, and an alumina substrate. It is observed that MAPbCl<sub>3</sub>-built gas sensor exhibited exceptional performance, achieving sensitivities of 0.232 ppm<sup>-1</sup> for NO<sub>2</sub> and 0.2187 ppm<sup>-1</sup> for NH<sub>3</sub>, alongside low limits of detection of 1 ppm and 3 ppm, respectively. Furthermore, it has demonstrated exceptional selectivity against a collection of various interfering gases and rapid response/recovery times (1.4&#xa0;s/0.7&#xa0;s for NO<sub>2</sub> and 1.5&#xa0;s/0.8&#xa0;s for NH<sub>3</sub>). These augmented sensing characteristics can be accredited to the high lattice polarity and strong hydrogen bonding in MAPbCl<sub>3</sub>, which promotes efficient charge transfer during redox reactions. The findings indicate that MAPbCl<sub>3</sub> is an auspicious candidate for low-power, high-performance toxic gas sensors functioning at RT.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Study on the feasibility of halide perovskite material based gas sensor for NO2 and NH3 detection in environmental monitoring applications

  • 期刊论文

  • 发表日期：

    2026年7月21日

查看全文
  • Arka Rup Banik,
  • Sourav Roy,
  • Rubiat Mustak,
  • A.H.M. Iftekharul Ferdous,
  • Md. Mahbubur Rahman

摘要

The identification of toxic gases, including ammonia (NH3) and nitrogen dioxide (NO2), at room temperature (RT) is essential for environmental monitoring and public health. Recently, halide perovskites (HP) have surfaced as intriguing candidates for gas sensing applications, attributed to their adjustable optoelectronic characteristics and robust interactions with gases. This research conducts a feasibility study of HP (MAPbCl3, CsPbCl3, and FAPbCl3)-based gas sensor for the detection of NH3 and NO2 utilizing COMSOL Multiphysics. The sensor architecture comprises of a HP sensing layer, interdigitated gold electrodes, a ruthenium dioxide heating element, and an alumina substrate. It is observed that MAPbCl3-built gas sensor exhibited exceptional performance, achieving sensitivities of 0.232 ppm-1 for NO2 and 0.2187 ppm-1 for NH3, alongside low limits of detection of 1 ppm and 3 ppm, respectively. Furthermore, it has demonstrated exceptional selectivity against a collection of various interfering gases and rapid response/recovery times (1.4 s/0.7 s for NO2 and 1.5 s/0.8 s for NH3). These augmented sensing characteristics can be accredited to the high lattice polarity and strong hydrogen bonding in MAPbCl3, which promotes efficient charge transfer during redox reactions. The findings indicate that MAPbCl3 is an auspicious candidate for low-power, high-performance toxic gas sensors functioning at RT.