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首页> 外文期刊>Advanced Functional Materials >Progressive NO_2 Sensors with Rapid Alarm and Persistent Memory-Type Responses for Wide-Range Sensing Using Antimony Triselenide Nanoflakes
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Progressive NO_2 Sensors with Rapid Alarm and Persistent Memory-Type Responses for Wide-Range Sensing Using Antimony Triselenide Nanoflakes

机译：具有快速报警和持续内存型响应的渐进式NO_2传感器，用于使用锑三链纳米薄片的宽范围感测

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摘要

Antimony triselenide (Sb2Se3) nanoflake-based nitrogen dioxide (NO2) sensors exhibit a progressive bifunctional gas-sensing performance, with a rapid alarm for hazardous highly concentrated gases, and an advanced memory-type function for low-concentration (1 ppm) monitoring repeated under potentially fatal exposure. Rectangular and cuboid shaped Sb2Se3 nanoflakes, comprising van der Waals planes with large surface areas and covalent bond planes with small areas, can rapidly detect a wide range of NO2 gas concentrations from 0.1 to 100 ppm. These Sb2Se3 nanoflakes are found to be suitable for physisorption-based gas sensing owing to their anisotropic quasi-2D crystal structure with extremely enlarged van der Waals planes, where they are humidity-insensitive and consequently exhibit an extremely stable baseline current. The Sb2Se3 nanoflake sensor exhibits a room-temperature/low-voltage operation, which is noticeable owing to its low energy consumption and rapid response even under a NO2 gas flow of only 1 ppm. As a result, the Sb2Se3 nanoflake sensor is suitable for the development of a rapid alarm system. Furthermore, the persistent gas-sensing conductivity of the sensor with a slow decaying current can enable the development of a progressive memory-type sensor that retains the previous signal under irregular gas injection at low concentrations.
机译：锑三链烯烃（SB2Se3）基于纳米烷基的二氧化氮（NO2）传感器表现出渐进的双官能气体传感性能，对于危险的高度浓缩气体的快速报警，以及用于低浓度的先进的记忆型功能（＆ 1 ppm）在可能致命的暴露下重复监测。矩形和长方体形状的Sb2se3纳米薄片，包括带有大面积区域的范德华平面和具有小区域的共价键平面，可以快速检测0.1至100ppm的宽范围的NO 2气体浓度。发现这些SB2Se3纳米薄片适用于由于其各向异性的准2D晶体结构而具有极端扩大的范德华平面的原始气体感测，在那里它们是湿度不敏感的，因此表现出极稳定的基线电流。 SB2Se3纳米铝饼传感器具有室温/低压操作，由于其低能量消耗和即使在仅1ppm的NO2气流下，也是明显的。结果，SB2Se3纳米塑料传感器适用于快速警报系统的开发。此外，具有缓慢衰减电流的传感器的持久气体感测电导率可以使得能够在低浓度下在不规则气体喷射下保留先前信号的渐进记忆型传感器。

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  • 来源
    《Advanced Functional Materials》 |2021年第38期|2102439.1-2102439.9|共9页
  • 作者

    Kim Young Been; Jung Sung Hyeon; Kim Dong Su; Deshpande Nishad G.; Suh Hee Won; Lee Hak Hyeon; Choi Ji Hoon; Lee Ho Seong; Cho Hyung Koun;

  • 作者单位

    Sungkyunkwan Univ SKKU Sch Adv Mat Sci & Engn 2066 Seobu Ro Suwon 16419 Gyeonggi Do South Korea;

    Sungkyunkwan Univ SKKU Sch Adv Mat Sci & Engn 2066 Seobu Ro Suwon 16419 Gyeonggi Do South Korea;

    Sungkyunkwan Univ SKKU Sch Adv Mat Sci & Engn 2066 Seobu Ro Suwon 16419 Gyeonggi Do South Korea;

    Indian Inst Informat Technol Surat 395007 India;

    Sungkyunkwan Univ SKKU Sch Adv Mat Sci & Engn 2066 Seobu Ro Suwon 16419 Gyeonggi Do South Korea;

    Sungkyunkwan Univ SKKU Sch Adv Mat Sci & Engn 2066 Seobu Ro Suwon 16419 Gyeonggi Do South Korea;

    Sungkyunkwan Univ SKKU Sch Adv Mat Sci & Engn 2066 Seobu Ro Suwon 16419 Gyeonggi Do South Korea;

    Kyungpook Natl Univ Sch Adv Mat Sci & Engn 80 Daehak Ro Daegu 41566 South Korea;

    Sungkyunkwan Univ SKKU Sch Adv Mat Sci & Engn 2066 Seobu Ro Suwon 16419 Gyeonggi Do South Korea|Sungkyunkwan Univ SKKU Res Ctr Adv Mat Technol 2066 Seobu Ro Suwon 16419 Gyeonggi Do South Korea;

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  • 关键词

    antimony triselenide; memory-type sensing; nanoflake structures; NO; (2) gas sensors; room-temperature recovery;

    机译：锑三链烯内;记忆型感测;纳米蛋糕结构;否;（2）气体传感器;室温恢复;

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