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

*此作品的通信作者

研究成果: Article同行評審

28 引文 斯高帕斯(Scopus)

摘要

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.

原文English
文章編號5871674
頁(從 - 到)1143-1145
頁數3
期刊Ieee Electron Device Letters
32
發行號8
DOIs
出版狀態Published - 8月 2011

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