Solution-processed chloroaluminum phthalocyanine (ClAlPc) ammonia gas sensor with vertical organic porous diodes

Govindsamy Madhaiyan; An Ting Sun; Hsiao-Wen Zan; Hsin-Fei Meng; Sheng Fu Horng; Li Yin Chen; Hsiao Wen Hung

doi:10.3390/s21175783

Solution-processed chloroaluminum phthalocyanine (ClAlPc) ammonia gas sensor with vertical organic porous diodes

Govindsamy Madhaiyan^*, An Ting Sun, Hsiao-Wen Zan, Hsin-Fei Meng, Sheng Fu Horng, Li Yin Chen, Hsiao Wen Hung

^*Corresponding author for this work

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

7 Scopus citations

Abstract

In this research work, the gas sensing properties of halogenated chloroaluminum phthalo-cyanine (ClAlPc) thin films were studied at room temperature. We fabricated an air-stable ClAlPc gas sensor based on a vertical organic diode (VOD) with a porous top electrode by the solution process method. The surface morphology of the solution-processed ClAlPc thin film was examined by field emission scanning electron microscopy (FESEM) and atomic force microscopy (AFM). The proposed ClAlPc-based VOD sensor can detect ammonia (NH₃ ) gas at the ppb level (100~1000 ppb) at room temperature. Additionally, the ClAlPc sensor was highly selective towards NH₃ gas compared to other interfering gases (NO₂, ACE, NO, H₂ S, and CO). In addition, the device lifetime was tested by storing the device at ambient conditions. The effect of relative humidity (RH) on the ClAlPc NH₃ gas sensor was also explored. The aim of this study is to extend these findings on halogenated phthalocyanine-based materials to practical electronic nose applications in the future.

Original language	English
Article number	5783
Pages (from-to)	1-9
Number of pages	9
Journal	Sensors
Volume	21
Issue number	17
DOIs	https://doi.org/10.3390/s21175783
State	Published - 1 Sep 2021

Keywords

Ammonia gas sensor
E-nose
Organic semiconductor
Room temperature
Vertical organic diode

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title = "Solution-processed chloroaluminum phthalocyanine (ClAlPc) ammonia gas sensor with vertical organic porous diodes",

abstract = "In this research work, the gas sensing properties of halogenated chloroaluminum phthalo-cyanine (ClAlPc) thin films were studied at room temperature. We fabricated an air-stable ClAlPc gas sensor based on a vertical organic diode (VOD) with a porous top electrode by the solution process method. The surface morphology of the solution-processed ClAlPc thin film was examined by field emission scanning electron microscopy (FESEM) and atomic force microscopy (AFM). The proposed ClAlPc-based VOD sensor can detect ammonia (NH3 ) gas at the ppb level (100~1000 ppb) at room temperature. Additionally, the ClAlPc sensor was highly selective towards NH3 gas compared to other interfering gases (NO2, ACE, NO, H2 S, and CO). In addition, the device lifetime was tested by storing the device at ambient conditions. The effect of relative humidity (RH) on the ClAlPc NH3 gas sensor was also explored. The aim of this study is to extend these findings on halogenated phthalocyanine-based materials to practical electronic nose applications in the future.",

keywords = "Ammonia gas sensor, E-nose, Organic semiconductor, Room temperature, Vertical organic diode",

author = "Govindsamy Madhaiyan and Sun, {An Ting} and Hsiao-Wen Zan and Hsin-Fei Meng and Horng, {Sheng Fu} and Chen, {Li Yin} and Hung, {Hsiao Wen}",

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AU - Madhaiyan, Govindsamy

AU - Sun, An Ting

AU - Zan, Hsiao-Wen

AU - Meng, Hsin-Fei

AU - Horng, Sheng Fu

AU - Chen, Li Yin

AU - Hung, Hsiao Wen

PY - 2021/9/1

Y1 - 2021/9/1

N2 - In this research work, the gas sensing properties of halogenated chloroaluminum phthalo-cyanine (ClAlPc) thin films were studied at room temperature. We fabricated an air-stable ClAlPc gas sensor based on a vertical organic diode (VOD) with a porous top electrode by the solution process method. The surface morphology of the solution-processed ClAlPc thin film was examined by field emission scanning electron microscopy (FESEM) and atomic force microscopy (AFM). The proposed ClAlPc-based VOD sensor can detect ammonia (NH3 ) gas at the ppb level (100~1000 ppb) at room temperature. Additionally, the ClAlPc sensor was highly selective towards NH3 gas compared to other interfering gases (NO2, ACE, NO, H2 S, and CO). In addition, the device lifetime was tested by storing the device at ambient conditions. The effect of relative humidity (RH) on the ClAlPc NH3 gas sensor was also explored. The aim of this study is to extend these findings on halogenated phthalocyanine-based materials to practical electronic nose applications in the future.

AB - In this research work, the gas sensing properties of halogenated chloroaluminum phthalo-cyanine (ClAlPc) thin films were studied at room temperature. We fabricated an air-stable ClAlPc gas sensor based on a vertical organic diode (VOD) with a porous top electrode by the solution process method. The surface morphology of the solution-processed ClAlPc thin film was examined by field emission scanning electron microscopy (FESEM) and atomic force microscopy (AFM). The proposed ClAlPc-based VOD sensor can detect ammonia (NH3 ) gas at the ppb level (100~1000 ppb) at room temperature. Additionally, the ClAlPc sensor was highly selective towards NH3 gas compared to other interfering gases (NO2, ACE, NO, H2 S, and CO). In addition, the device lifetime was tested by storing the device at ambient conditions. The effect of relative humidity (RH) on the ClAlPc NH3 gas sensor was also explored. The aim of this study is to extend these findings on halogenated phthalocyanine-based materials to practical electronic nose applications in the future.

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KW - Room temperature

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Solution-processed chloroaluminum phthalocyanine (ClAlPc) ammonia gas sensor with vertical organic porous diodes

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