Porous organic TFTs for the applications on real-time and sensitive gas sensors

Hsiao-Wen Zan; Ming Zhi Dai; Ting Yu Hsu; Hung Cheng Lin; Hsin-Fei Meng; Yuh-Shyong Yang

doi:10.1109/LED.2011.2155025

Porous organic TFTs for the applications on real-time and sensitive gas sensors

Hsiao-Wen Zan^*, Ming Zhi Dai, Ting Yu Hsu, Hung Cheng Lin, Hsin-Fei Meng, Yuh-Shyong Yang

^*Corresponding author for this work

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

29 Scopus citations

Abstract

A pentacene-based organic thin-film transistor (OTFT) with a porous active layer is demonstrated for the first time. The porous OTFT exhibits a fast, sensitive, and reversible response to ammonia gas with a detection limit as 500 ppb, whereas the OTFT without porous structure has a slow response and a poor recovery behavior. The sensing mechanism dominated by the dissociation of hydroxyl groups of the polymer dielectric layer is raised and discussed. The proposed device is the first OTFT-based ammonia sensor with reversible response and high sensitivity in low parts-per-million range. It is promising for the development of a diagnostic breath analysis system.

Original language	English
Article number	5871674
Pages (from-to)	1143-1145
Number of pages	3
Journal	Ieee Electron Device Letters
Volume	32
Issue number	8
DOIs	https://doi.org/10.1109/LED.2011.2155025
State	Published - Aug 2011

Keywords

Ammonia
gas sensor
pentacene
porous
thin-film transistor (TFT)

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10.1109/LED.2011.2155025

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abstract = "A pentacene-based organic thin-film transistor (OTFT) with a porous active layer is demonstrated for the first time. The porous OTFT exhibits a fast, sensitive, and reversible response to ammonia gas with a detection limit as 500 ppb, whereas the OTFT without porous structure has a slow response and a poor recovery behavior. The sensing mechanism dominated by the dissociation of hydroxyl groups of the polymer dielectric layer is raised and discussed. The proposed device is the first OTFT-based ammonia sensor with reversible response and high sensitivity in low parts-per-million range. It is promising for the development of a diagnostic breath analysis system.",

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AU - Zan, Hsiao-Wen

AU - Dai, Ming Zhi

AU - Hsu, Ting Yu

AU - Lin, Hung Cheng

AU - Meng, Hsin-Fei

AU - Yang, Yuh-Shyong

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N2 - A pentacene-based organic thin-film transistor (OTFT) with a porous active layer is demonstrated for the first time. The porous OTFT exhibits a fast, sensitive, and reversible response to ammonia gas with a detection limit as 500 ppb, whereas the OTFT without porous structure has a slow response and a poor recovery behavior. The sensing mechanism dominated by the dissociation of hydroxyl groups of the polymer dielectric layer is raised and discussed. The proposed device is the first OTFT-based ammonia sensor with reversible response and high sensitivity in low parts-per-million range. It is promising for the development of a diagnostic breath analysis system.

AB - A pentacene-based organic thin-film transistor (OTFT) with a porous active layer is demonstrated for the first time. The porous OTFT exhibits a fast, sensitive, and reversible response to ammonia gas with a detection limit as 500 ppb, whereas the OTFT without porous structure has a slow response and a poor recovery behavior. The sensing mechanism dominated by the dissociation of hydroxyl groups of the polymer dielectric layer is raised and discussed. The proposed device is the first OTFT-based ammonia sensor with reversible response and high sensitivity in low parts-per-million range. It is promising for the development of a diagnostic breath analysis system.

KW - Ammonia

KW - gas sensor

KW - pentacene

KW - porous

KW - thin-film transistor (TFT)

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JO - Ieee Electron Device Letters

JF - Ieee Electron Device Letters

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ER -

Porous organic TFTs for the applications on real-time and sensitive gas sensors

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Keywords

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