Ultrasensitive detection of hydrogen sulfide gas based on perovskite vertical channel chemo-sensor

Kuan Yi Lee; Ju Chun Hsieh; Chi An Chen; Wei Lun Chen; Hsin Fei Meng; Chia Jung Lu; Sheng Fu Horng; Hsiao Wen Zan

doi:10.1016/j.snb.2020.128988

Ultrasensitive detection of hydrogen sulfide gas based on perovskite vertical channel chemo-sensor

Kuan Yi Lee, Ju Chun Hsieh, Chi An Chen, Wei Lun Chen, Hsin Fei Meng, Chia Jung Lu, Sheng Fu Horng^*, Hsiao Wen Zan

^*此作品的通信作者

化學系

研究成果: 雜誌貢獻 › 期刊論文 › 同行評審

37 引文斯高帕斯（Scopus）

摘要

An ultrasensitive hydrogen sulfide gas sensor based on methylammonium lead perovskite is reported in this work. The pseudohalide molecular anion (SCN⁻) was introduced as a dopant in the perovskite-based active layer of the sensor. With the enlarged operational current provided by the vertical structure of the sensors, both the MAPbI_3-_x(SCN)_x-based and the MAPbI₃-based gas sensors exhibit excellent ppb-regime (∼200 ppb) hydrogen sulfide gas sensing capability. Particularly, with the SCN⁻ doped, the MAPbI_3-_x(SCN)_x-based gas sensor demonstrates an enhanced sensitivity and a much improved ambient air endurance by extending the device lifetime more than 5 days. Finally, we also conducted experiments to study the effects of relative humidity and light irradiation on sensing performance. Preliminary mechanisms were also proposed.

原文	英語
文章編號	128988
期刊	Sensors and Actuators, B: Chemical
卷	326
DOIs	https://doi.org/10.1016/j.snb.2020.128988
出版狀態	已發佈 - 2021 1月 1

ASJC Scopus subject areas

電子、光磁材料
儀器
凝聚態物理學
表面、塗料和薄膜
金屬和合金
電氣與電子工程
材料化學

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10.1016/j.snb.2020.128988

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title = "Ultrasensitive detection of hydrogen sulfide gas based on perovskite vertical channel chemo-sensor",

abstract = "An ultrasensitive hydrogen sulfide gas sensor based on methylammonium lead perovskite is reported in this work. The pseudohalide molecular anion (SCN−) was introduced as a dopant in the perovskite-based active layer of the sensor. With the enlarged operational current provided by the vertical structure of the sensors, both the MAPbI3-x(SCN)x-based and the MAPbI3-based gas sensors exhibit excellent ppb-regime (∼200 ppb) hydrogen sulfide gas sensing capability. Particularly, with the SCN− doped, the MAPbI3-x(SCN)x-based gas sensor demonstrates an enhanced sensitivity and a much improved ambient air endurance by extending the device lifetime more than 5 days. Finally, we also conducted experiments to study the effects of relative humidity and light irradiation on sensing performance. Preliminary mechanisms were also proposed.",

keywords = "Gas sensor, Hydrogen sulfide, Ppb-regime, SCN-doped perovskite, Sensing in air",

author = "Lee, {Kuan Yi} and Hsieh, {Ju Chun} and Chen, {Chi An} and Chen, {Wei Lun} and Meng, {Hsin Fei} and Lu, {Chia Jung} and Horng, {Sheng Fu} and Zan, {Hsiao Wen}",

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AU - Lee, Kuan Yi

AU - Hsieh, Ju Chun

AU - Chen, Chi An

AU - Chen, Wei Lun

AU - Meng, Hsin Fei

AU - Lu, Chia Jung

AU - Horng, Sheng Fu

AU - Zan, Hsiao Wen

PY - 2021/1/1

Y1 - 2021/1/1

N2 - An ultrasensitive hydrogen sulfide gas sensor based on methylammonium lead perovskite is reported in this work. The pseudohalide molecular anion (SCN−) was introduced as a dopant in the perovskite-based active layer of the sensor. With the enlarged operational current provided by the vertical structure of the sensors, both the MAPbI3-x(SCN)x-based and the MAPbI3-based gas sensors exhibit excellent ppb-regime (∼200 ppb) hydrogen sulfide gas sensing capability. Particularly, with the SCN− doped, the MAPbI3-x(SCN)x-based gas sensor demonstrates an enhanced sensitivity and a much improved ambient air endurance by extending the device lifetime more than 5 days. Finally, we also conducted experiments to study the effects of relative humidity and light irradiation on sensing performance. Preliminary mechanisms were also proposed.

AB - An ultrasensitive hydrogen sulfide gas sensor based on methylammonium lead perovskite is reported in this work. The pseudohalide molecular anion (SCN−) was introduced as a dopant in the perovskite-based active layer of the sensor. With the enlarged operational current provided by the vertical structure of the sensors, both the MAPbI3-x(SCN)x-based and the MAPbI3-based gas sensors exhibit excellent ppb-regime (∼200 ppb) hydrogen sulfide gas sensing capability. Particularly, with the SCN− doped, the MAPbI3-x(SCN)x-based gas sensor demonstrates an enhanced sensitivity and a much improved ambient air endurance by extending the device lifetime more than 5 days. Finally, we also conducted experiments to study the effects of relative humidity and light irradiation on sensing performance. Preliminary mechanisms were also proposed.

KW - Gas sensor

KW - Hydrogen sulfide

KW - Ppb-regime

KW - SCN-doped perovskite

KW - Sensing in air

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Ultrasensitive detection of hydrogen sulfide gas based on perovskite vertical channel chemo-sensor

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