Impedance spectroscopy for pentacene field-effect transistor: channel formation process in transistor operation

Yuya Tanaka; Yutaka Noguchi; Michael Kraus; Wolfgang Brütting; Hisao Ishii

doi:10.1117/12.893685

16 September 2011 Impedance spectroscopy for pentacene field-effect transistor: channel formation process in transistor operation

Yuya Tanaka, Yutaka Noguchi, Michael Kraus, Wolfgang Brütting, Hisao Ishii

Author Affiliations +

Proceedings Volume 8117, Organic Field-Effect Transistors X; 811713 (2011) https://doi.org/10.1117/12.893685
Event: SPIE Photonic Devices + Applications, 2011, San Diego, California, United States

Abstract

The carrier behaviors in pentacene based organic field-effect transistor (OFET) were investigated by impedance spectroscopy measurement (IS). We clearly observed the carrier injection from the electrode and accumulation at the pentacene/insulator interface. We propose the measurement circuit for IS in transistor operation by using battery source for drain voltage. In this method, an additional structure where capacitance gradually increases is observed between injection and accumulation processes. From the comparison this result and the analyzed curve which reflects the injection properties from the electrode, we conclude that this additional structure originates from the charge sheet spreading into channel region. This technique enables us to observe the carrier injection to the channel region and investigate the charge sheet formation from off-state to on-state and vice versa of OFETs.

Citation Download Citation

Yuya Tanaka, Yutaka Noguchi, Michael Kraus, Wolfgang Brütting, and Hisao Ishii "Impedance spectroscopy for pentacene field-effect transistor: channel formation process in transistor operation", Proc. SPIE 8117, Organic Field-Effect Transistors X, 811713 (16 September 2011); https://doi.org/10.1117/12.893685

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