Related Experiment Video
Updated: Aug 15, 2026

Sensing of Barrier Tissue Disruption with an Organic Electrochemical Transistor
Published on: February 10, 2014
Interface and gate bias dependence responses of sensing organic thin-film transistors
Maria Cristina Tanese1, Daniel Fine, Ananth Dodabalapur
1Dipartimento di Chimica and Centro di Eccellenza TIRES, Università degli Studi di Bari, 4 via Orabona, 70126 Bari, Italy.
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.
More Related Videos
Related Concept Videos
Biasing of FET
In an N-channel JFET, the structure consists of N-type material forming the channel on a P-type substrate, with the gate...
Biasing of Metal-Semiconductor Junctions
In Schottky junctions, where the semiconductor is n-type, applying a positive voltage to the metal relative to the semiconductor reduces its Fermi...
Characteristics of MOSFET
Various vital parameters influence their functionality, which is crucial for theory and electronics applications. First, channel dimensions, precisely length, and width, are pivotal. The size of these channels affects the transistor's ability to carry current and switching speeds; shorter channels typically enable quicker...
Small-Signal Analysis of MOSFET Amplifiers
Field Effect Transistor
MOSFET: Enhancement Mode
In their basic form, enhancement-mode MOSFETs are typically non-conductive when the gate-source voltage (Vgs) is zero. This default 'off' state means no current...

