Influence of Molecular Structure And Film Properties on the Water-Stability and Sensor Characteristics of Organic Transistors

被引：68

作者：

Roberts, Mark E. ^{[1
]}

Mannsfeld, Stefan C. B. ^{[1
]}

Tang, Ming Lee ^{[1
]}

Bao, Zhenan ^{[1
]}

机构：

[1] Stanford Univ, Dept Chem Engn, Stanford, CA 94305 USA

来源：

CHEMISTRY OF MATERIALS | 2008年 / 20卷 / 23期

关键词：

D O I：

10.1021/cm802530x

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Low-voltage organic thin-film transistors were fabricated to investigate the stability of organic semiconductors in water and determine the critical parameters for aqueous phase chemical detection. We showed that the molecular structure, alkyl-chain length, and thin-film morphology strongly influence the electrical characteristics in water. Highly two-dimensional films of alkyl-substituted semiconductors greatly reduced the influence of water on the electrical characteristics. The sensitivity and response times of OTFT sensors were also impacted by the thin-film structure of the organic semiconductor. OTFT sensors were used to detect 10 parts per-billion cysteine and 40 ppm TNT in aqueous solutions.

引用

页码：7332 / 7338

页数：7

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