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

Department of Chemistry

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

32 Citations (Scopus)

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
Journal	Sensors and Actuators, B: Chemical
Volume	326
DOIs	https://doi.org/10.1016/j.snb.2020.128988
Publication status	Published - 2021 Jan 1

Keywords

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

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Instrumentation
Condensed Matter Physics
Surfaces, Coatings and Films
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

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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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doi = "10.1016/j.snb.2020.128988",

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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

Abstract

Keywords

ASJC Scopus subject areas

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