Organic field-effect transistors applicable for gas and ion detection

A. Klug; K. Schmoltner; E. J. W. List

doi:10.1117/12.861602

30 August 2010 Organic field-effect transistors applicable for gas and ion detection

A. Klug, K. Schmoltner, E. J. W. List

Proceedings Volume 7779, Organic Semiconductors in Sensors and Bioelectronics III; 77790G (2010) https://doi.org/10.1117/12.861602
Event: SPIE Photonic Devices + Applications, 2010, San Diego, California, United States

Abstract

Aside from other target applications, organic field-effect transistors (OFETs) are also promising devices for sensing various kinds of analytes, including gases, ions and biomolecules. In this work ion-sensitive polymer-based OFETs will be discussed. In detail, operational device instabilities caused by the movement of mobile ions in poly(3-hexylthiophene)-based OFETs are investigated, when (a) an ion-containing gate dielectric, polyvinyl alcohol (PVA), is applied in a top-gate architecture and (b) ions are deliberately added to the organic semiconductor in a bottom-gate architecture. The underlying mechanisms for the observed source-to-drain channel current drifts upon bias stress are thoroughly explained. In addition, device instabilities due to mobile ions within the dielectric are demonstrated with rigid and flexible PVA-based OFETs including inkjet-printed source/drain electrodes and a meander-shaped top-gate architecture, the latter enabling the realization of smart, integrated and low-cost OFET-based sensor systems.

Citation Download Citation

A. Klug, K. Schmoltner, and E. J. W. List "Organic field-effect transistors applicable for gas and ion detection", Proc. SPIE 7779, Organic Semiconductors in Sensors and Bioelectronics III, 77790G (30 August 2010); https://doi.org/10.1117/12.861602

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available