Drain current change of CuPc&TPFB and CoPc&TPFB devices in different gas vapors for 5 minutes; 1. methanol (>1630 ppm); 2. acetone (>3200 ppm); 3. dichloromethane (>6580 ppm); 4. ethyl acetate (>1250ppm); 5. 4.5 ppm ammonia.
Organic semiconductors offer great potential in applications in chemical sensing because of various mechanisms by which they may be made sensitive to their environments. We develop different materials and device schemes for chemical sensing applications.
- Besar, K; Yang, S.; Guo, X.; Huang, W.; Rule, A.M.; Breysse, P.N.; Kymissis, I.J.; Katz, H.E. “Printable Ammonia Sensor Based on Field-effect Transistor,” Organic Electronics, 15, 3221-3230, 2014
- Huang, W.; Sinha, J.; Yeh, M.-L.; Martinez Hardigree, J.F.; LeCover, R.; Besar, K.; Rule, A.M.; Breysse, P.M.; Katz, H.E. “Diverse Organic Field Effect Transistor Sensor Responses from Two Functionalized Naphthalenetetracarboxylic Diimides and Copper Phthalocyanine Semiconductors Distinguishable over a Wide Analyte Range,” Adv. Funct. Mat. 23, 4094-4104