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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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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 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.

Original language	English
Article number	128988
Pages (from-to)	1-8
Number of pages	8
Journal	Sensors and Actuators, B: Chemical
Volume	326
DOIs	https://doi.org/10.1016/j.snb.2020.128988
State	Published - 1 Jan 2021

Keywords

Gas sensor
Hydrogen sulfide
Ppb-regime
SCN-doped perovskite
Sensing in air

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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 Hsin-Fei Meng and Lu, {Chia Jung} and Horng, {Sheng Fu} and Hsiao-Wen Zan",

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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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JO - Sensors and Actuators, B: Chemical

JF - Sensors and Actuators, B: Chemical

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ER -

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

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Keywords

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