A Comparative Study of the Gas Sensing Behavior in P3HT-and PBTTT-Based OTFTs: The Influence of Film Morphology and Contact Electrode Position

作者：Manoli Kyriaki; Dumitru Liviu Mihai; Mulla Mohammad Yusuf; Magliulo Maria; Di Franco Cinzia; Santacroce Maria Vittoria; Scamarcio Gaetano; Torsi Luisa^*

来源：Sensors (Switzerland), 2014, 14(9): 16869-16880.

DOI：10.3390/s140916869

• organic thin film transistors
• chemical sensors
• volatile organic compounds

Bottom- and top-contact organic thin film transistors (OTFTs) were fabricated, using poly(3-hexylthiophene-2,5-diyl) (P3HT) and poly[2,5-bis(3-tetradecylthiophen-2-yl)thieno[3,2-b]thiophene] (PBTTT-C16) as p-type channel semiconductors. Four different types of OTFTs were fabricated and investigated as gas sensors against three volatile organic compounds, with different associated dipole moments. The OTFT-based sensor responses were evaluated with static and transient current measurements. A comparison between the different architectures and the relative organic semiconductor was made.

• 出版日期2014-9