Interface and gate bias dependence responses of sensing organic thin-film transistors
- 19 February 2005
- journal article
- research article
- Published by Elsevier BV in Biosensors and Bioelectronics
- Vol. 21 (5), 782-788
- https://doi.org/10.1016/j.bios.2005.01.016
Abstract
The effects of the exposure of organic thin-film transistors, comprising different organic semiconductors and gate dielectrics, to 1-pentanol are investigated. The transistor sensors exhibited an increase or a decrease of the transient source–drain current in the presence of the analyte, most likely as a result of a trapping or of a doping process of the organic active layer. The occurrence of these two effects, that can also coexist, depend on the gate-dielectric/organic semiconductor interface and on the applied gate field. Evidence of a systematic and sizable response enhancement for an OTFT sensor operated in the enhanced mode is also presented.Keywords
This publication has 31 references indexed in Scilit:
- Close look at charge carrier injection in polymer field-effect transistorsJournal of Applied Physics, 2003
- Field-effect detection of chemical species with hybrid organic/inorganic transistorsApplied Physics Letters, 2003
- Microenvironmental Properties and Chiral Discrimination Abilities of Bile Salt Micelles by Fluorescence Probe TechniqueAnalytical Chemistry, 2002
- Silsesquioxane Resins as High-Performance Solution Processible Dielectric Materials for Organic Transistor ApplicationsAdvanced Functional Materials, 2002
- Organic oscillator and adaptive amplifier circuits for chemical vapor sensingJournal of Applied Physics, 2002
- Monitoring pH with organic-based field-effect transistorsSensors and Actuators B: Chemical, 2002
- Electronic sensing of vapors with organic transistorsApplied Physics Letters, 2001
- Phthalocyanine-based field-effect transistor as ozone sensorSensors and Actuators B: Chemical, 2001
- Detection and titration of ozone using metallophthalocyanine based field effect transistorsSensors and Actuators B: Chemical, 2000
- Determination of field-effect mobility of poly(3-hexylthiophene) upon exposure to NH3 gasSynthetic Metals, 1990