The College of Education for Pure Sciences at the University of Basra organized a scientific lecture entitled “Manufacture and study of organic thin film transistors and their applications as gas sensors”
The lecture presented by the researcher (Amjad Jassem Al-Shawi) included
Gas sensing technology using organic thin-film transistors (OTFTs) has been studied extensively in the past few years. The low manufacturing cost, high sensitivity and fast response of this type of sensor have made it the focus of researchers in academia and industry. In this lecture, the fabrication and study of organic thin-film transistors (OTFTs) using off-center spin coating technique are explained and illustrated. Off-Center Spin-Coating Technique and then applied as sensors for alcoholic gases (ethanol and methanol) at concentrations (parts per million) for both gases 1-8 ppm). The voltage characteristics of the OTFTs and the output characteristics (VDS-IDS) were checked when applying different voltages from the VGS and the threshold voltage was calculated. All measurements were made at atmospheric pressure and room temperature using a gas sensor system. It was found that there is a clear response to the thin film transistors as sensors for methanol and ethanol gases at concentrations of parts per million, which makes them a candidate to be a leader in such applications because of their fast response.
The purpose of the lecture
Fabrication and improvement of the organic semiconductor thin-film transistor (OTFT) using off-center spin coating technology. Off-Center Spin-Coating Technique
Testing and application of an organic semiconductor-based thin-film transistor (OTFT) as an alcohol gas (ethanol and methanol) sensor.